You are a beautiful and mature woman , the envy of everyone you have a marriage , however, first between the bed , there is a kind of unspeakable embarrassment cloud -like surround you, you love him, always trying to do better, but always so unsatisfactory. How to make a woman have an unforgettable sex ! breast clamps
In general, good sex feels mostly because the following types of factors:

One , they have a strong desire to want it, feel very relaxed, the most easily accessible situation .

For example, a respondent 's experience : "It is the best time to talk after drinking from a friend , he set me home is already more than five in the morning , my brother slept in the room , I want him to go wash my face , take a break and then go back , and he hugged me , but one said: 'I want ! ' That time we dare not loud in the room , afraid of waking his brother , but we have reached a high point at the same time that the feeling is great ...... ! " toggle clamps
2 , the other good performance , very thoughtful , good skills .

One respondent said: "The best sexual experiences and my fourth boyfriend, he is a photographer , very romantic , gentle, cool appearance , with him often have some unexpected surprises . having sex with him is a very beautiful thing , he will always find a comfortable place to play music, drink a little wine , the most important is that he will focus on how I feel, not the kind of people who finish your sleep he would put a pool of warm water and bathing me , that feeling never forget . " pipe clamps
3 , the two blend of affection , a romantic foreplay, feel mutual understanding, and deeply cherished by the other party .

This usually happens between lovers sweetly , but there are specific examples , such as the respondents have the experience : "So far , I feel is the best one sex with a foreigner, I was divorced two years, and he might see that I need, he stayed in the hotel , nine at night , he poured a cup of beer to me , let's chat on the sofa , each has a very good feeling, he kissed me ears, kiss my cheek and hugged me again to live , the moment I feel really beautiful, never have had such a feeling of being Kenshi . hose clamps
Because he understands how you feel , taste your reaction after the bath he would carry me to bed , when I was the only thought was , I want relaxed , put aside all shame, burden, wholeheartedly enjoy the sight of this moment . He was very big , I'm petite , but he is very Lianxiangxiyu , he taught me to play slowly , slowly to touch , step by step lead me into nirvana, to appreciate the realm of ecstasy . " best dildos
4 , ritual and celebration mood, reunion , special days and so on.

One respondent said: "The best one was a long time did not meet him , a meeting at the hotel , the kind of passion between lust flames , the body seems to want to let him eat , and he also true strong , when ' enter ', the body can not help but delight with, trembling, embracing the hope that close contact and friction and this time the best , and the climax can be two or three times, especially when he was skillful guidance , that orgasm is so beautiful . " black dildos
5, the surface when stimulated , when the atmosphere of adventure .

For example, having an affair , to deceive the public , fear of being discovered , but also tend to bring out the intense pleasure : " the best time in the foreign field , while driving to do , have a great feeling of freedom ." " Best time in mtv happen, with an American film saw halfway , he began to caress my body, I did not refuse , but also there was a reaction , we are asking each other warmly , correspond to each other in the most wild, unbridled process, culminating together . " glass dildos

Look sexual foreplay supplier

There is no fun, there is no romance , there is no patience enough attention, enough love , from how he would spend the mind to find occasions , rendering the atmosphere with what form , what kind of tactics to mobilize emotions, what kind of mood pleasure both sides glance.  toggle clamps
Low sexual quotient basically do not care about anything , just as one went straight to the topic , or even if there is foreplay, foreplay and just for foreplay, superficial and hasty conclusion after entering a link . And from the first line psychological consultation feedback , foreplay is sex enchanted and enjoy the most exciting , and most involve love blend . hose clamps
Process of emotional and self-

A man confident enough , there is no experience, character is irritable or calm , emotion is rough dry or delicate , is not thoughtful, careful enough , or too self-conscious to love as the most important , the woman 's attitude is still holding in their hearts as tools for gender sex is as intimate or physical needs , in this process has been clearly presented it. bessey clamps
Smart woman in this process will be to their find what kind of man , the future love life , and even marriage status , what would roughly know the answer .

Of course, the whole process is not recommended to keep your eyes open to observe, to think with the mind , listen with our ears . Instead, use your body to feel, it will provide you with the most realistic feedback. top sex toy masturbator,breast clamps
After the show worth watching product

It was recently thought out his new new term , "sex products ." Man must have character, have a drink of wine products, sex products have sex . Sex product good men make women feel satisfied and nostalgic, even before the two steps can make up for the shortcomings . glass dildos
After the movie is pretty much ignored by men , youth who do not know , and later do not care, does not matter. So many women 's dissatisfaction is that after a lifetime without drama .

Men , love to vent finished finished finished tired are busy doing what ? Drinking , bathing , dressing , turn on the TV to watch TV, smoke , turned backwards sleeping, playing computer games ( because only excited too , half past one would not sleep ) , call or return missed calls , dressing leave ... ... bluetooth vibrator
Woman feeling like being used as a tool , loneliness was lying there, waiting for the body at low tide , hearts full of loss and sadness , will produce confused, not knowing that he is still a man of love is sexual love itself . pipe clamps
Sex products men will take advantage of high drama after time , so that women whispered softly in his arms , just to say something, regardless of sex , and there is no relationship, it is the exchange of love are two sides of the heart the deepest emotions requirements. toggle clamps

Sex is a cause for happiness , especially women , want to be able to get from her husband that special care , sometimes also requires skill in bed , oh , can not know the five large bed technique , make your woman scream . breast clamps
A timely insertion depth , appropriate rude . Many women want to be kissing men suddenly to the wall , so the sex , when men also can show you the proper masculine side, grabbed her by the hair, pinch her ​​arm , slapping her buttocks , which are let her be more exciting, more intense course of action or a bit dangerous must pass her consent , absolutely can not let the other injured. hose clamps
2 , deliberately to lure the murderer . You want your "lady " in bed bohemian style of thousands , we should let her drive your emotions. You can straighten her impressive chest without prior , do not touch them , she did not put your hand on between his legs when you're just in between her back and lower abdomen free , you can come up with one leg , let her rub genitals in your lap , but do not take the initiative to enter , so she took the initiative to lead you into her territory.
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3 , eyes , ear. Not all women on your previous usual tricks are good enough , even to deal with a woman , a long time , but also changing the pattern , or else will lose their effect , the top -level experts are good at sex on him under observation woman, they will determine the time women are comfortable with , or slightly uncomfortable, she touched her which area would be more excited little reaction zone which is also able to guess their thoughts. pipe clamps
4 , indeed , if there seems to be no . Do not worry stripped of all her clothes, can leave a sexy vest, translucent little panties , red high heels or necklaces, earrings, so you can make the expansion effort , excitement extreme point . Across the torn vest women's breasts , but also make a woman's desire to burn more vigorous . hose clamps
5 , step by step , small pot over low heat . Stir fry is far from a small fire to simmer stew more taste, eat up even more gusto. Should be carried out slowly intimate kiss lick lips to be like when the ice time to suck like eating popsicle , touch the time to apply makeup like a face , make your moves like slow movie playback , this make her unbearable hunger , the fire of desire will burn up with you attached .
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Masturbation masturbation aspects, we can do to increase their own sexual pleasure. Here are just a few super- pleasure masturbation masturbation techniques:
Another time
Women usually choose masturbation before sleep and early morning . May choose to rest at noon or afternoon , with a high tide to help you get rid of tired and weary .  hose clampsAnother appliance
Many people like to hand , many people like to use the same sex toys . Just like one of the ways of women, may wish to change it, or you can select these two methods will give you a different feeling. Sex toys also points to stimulate yin yin Road pedicle and stimulating toys , women can choose in a variety of ways , from time to time to get a new way . bessey clamps
Change location
Some people like a bench in the car , public places or places so merry masturbation , but others may prefer to work during masturbation. Most women are female masturbation at home , if you can not accept other locations , you can change the home in different places . Such as in the bathroom or balcony, together with some sexual fantasies will have fresh feelings. pipe clamps
Another touch method
Masturbation , you can pick better to tease myself. Can stroking their breasts , or other sensitive stroked his belt , so you can let yourself feel the multifaceted pleasure. toggle clamps
Another state
Masturbation with a partner is also a delight . When you and your partner comfortable enough when , on the floor , sofa , or other places to find a location. And your partner the same way to stimulate yourself , doing so will quickly liven up the atmosphere and is about to happen next , more intense stimulation and prepared the way .
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Most women desire to have access to orgasm

As long as the man in an exciting period and duration sufficiently effective for women tease and play, female sexuality can be extremely excited ; just make women extremely excited, women will have a strong desire to pursue high ; already have a strong desire of women seeking high will not wait want their excitement, men can suffer from continuous violent attacks. Where the feelings experienced female orgasm will be clever with excitement and men to make their pro- highs coincide achieve the most accurate position , in men under the storm of passion Peng worship of women remains inadequate and inflexible body will not help straightening twist swing , so that my excitement generated strong anti- extrusion pressure upward so that his excitement get the best efforts. At this point , where there are high experienced pro men will promptly and accurately apply methods and techniques to promote a high , increase the attack strength and speed attack speed, the excitement of female orgasm continuous violent attacks , making the top and bottom two forces form a clever relative extrusion and friction , the female orgasm into perfect pinnacle of pleasure , so that female sexual accumulate a tremendous force in the moment of explosive , its dynamics is often more than male orgasm intensity and duration than men also longer. On the peak of orgasm women and men with impunity for straightening twisted tear fight, while moan or scream or shout, or biting , grasping , pinching , or pinch, beat , beat , such as Sin , such as drunk , like epilepsy like mad , and some women start from a static gas climax after climax only to scream and at low tide , which is what people are talking about it being dead . toggle clamps
It is no exaggeration imaginary strings to get the actual occurrence , but the pleasure of the female orgasm true description of all healthy women have orgasm physiological characteristics and psychological desires, as long as the male master promoting high operating essentials , to meet the operational the requirements , in accordance with the correct procedure for promoting high operating , we can ensure that every husband and wife sex life, women can have an orgasm to enjoy. hose clamps
Frigidity and an important reason for low libido is not the result of high

According to a lot of information on the proportion of the same number , namely: time to now only one-third of the women in each sex couples to enjoy an orgasm when you can get there only occasionally get a third of women , and another three one of two women had never enjoyed an orgasm. No one will believe that there is such a large group of women are suffering from congenital hypothyroidism sex and sexuality . Did you make this mistake Goddess ? bessey clamps
Books and magazines over the years, all kinds of women climax reactions from different angles made ​​a vivid description of the image , not only no high women aspire to , but also to have not seen the image of his wife orgasm reaction husbands envy , do see female sexual orgasm face, hear the female orgasm moan , just a little lamb or mercy , into the tide after a sudden twist correction tear fight with you , of course, there is a sense of accomplishment and happiness , but also an important part of sexual enjoyment world. black dildos
But with this totally opposite another image of female sexual response , some men were described as " wooden " , blame for the living , " mummy " , for every single life in their efforts feel futile , grievances full of . glass dildos
Marital sex life in a hot and cold two distinct reactions , successes and failures, merits and demerits , do not belong to women . There is no doubt that the vast majority of women , have inspired sexual arousal , induce sexual desire , orgasm physiological characteristics and psychological desires, while the male is to female sexual arousal , so that women have sexual desires, so that women acquired the climax of the decisive factor. Men to get out of the "no division through" self-righteous misunderstanding , with modern theory to guide their practice , to understand the promotion of female orgasm knowledge , to know how to promote high operating essentials , to master and promote high demand , and promote methods and promoting high high skills. Should be a clear understanding that, in the long-term sexual life , men can not allow women to obtain sexual pleasure , can not let women enjoy orgasm is leading female frigidity , an important reason for low libido . Women are dismissed as " dumb " complained a " mummy " and the backs of low libido or sex and blame is unfair . vibration vaginal
There are also occasionally to get that part of the female orgasm , how to explain the nickname ? Are they sometimes healthy , sometimes you sick ? The reason is that most men do not know this woman 's excitement there, there is no master to make women orgasm real promote high operating methods and techniques , thanks to the result of luck .

Female boss is a middle-aged women , but to keep the body very well, and girls the same. Nearly seven meters grid, a curly hair , charming mature woman style , fashion dress , let me fascinated endless. In fact, this fortunately , I am not a goat , but the mouth of poor female boss , all right old speak yellow piece , so I always let my dreams . breast clamps
Female boss at all her spare time, always like to talk about the middle of a bunch of men in yellow satin . In fact, we are middle-aged, so did what's taboo . But I was young and fit lad , yellow piece of me always shy embarrassed . Organs and units too boring , so everyone is going to be nothing and everyone talk about these things. But I have yet to go through those things, sometimes really could not help myself . toggle clamps
Sometimes I really do not understand , female boss in the eyes of sex and love should be like , do not just talk about the joys of life these Raunchy do ? I like most people , that is not enough female boss is not indecent behavior , life style problems. I told her curiosity is getting worse , but they can not understand her private life , so I am very distressed. Until the time we went inspectors toured the country , so I had the chance . pipe clamps
Our daily life is a hotel unit arranged in the county . In fact, our work is very simple , is to visit some of the village in the township , and then put forward a number of shortcomings , corrections, deployment. And female boss night I went back to hotel room next to , so I'm always a little freak . Female boss a lot older than me , weekdays have a good relationship , in the countryside naturally care for one another . But I really did not think I would be so by her fans could not control ...... hose clamps
I do not know what the boss in the end is a kind of feeling . She may feel bad life style , but could not help her temptation. I do not know what to do tangled . I do not know of her dreams is not insult her , but I also feel that she is not often done with other men disgraced things. bessey clamps
One night, I knocked on female boss room. She came to the door when it comes wrapped in towels , appears to be just the end of a bath . Boss did not take me as an outsider , she asked me what to do, while the hair with a dry towel . See so eclectic stuff , I could extricate the impulses hugged boss, easily ripped off her towel . She always refused me , in my body under constant struggle, but she is a woman after all , or was I living trampled . I know she is struggling to fight my dissatisfaction and , I imagine she was not the kind of woman ...... glass dildos

Experts ideal frequency of sex ideal frequency of sex is that both spouses to reach agreement in sex , not rigidly adhere to a fixed pattern . The following invited more U.S. sexologists , sexual frequency for different review guidance. In fact, both men and women , there should face the reality of decreased libido , promptly seek medical attention. breast clamps
Night time

Experts: praise your extraordinary effort , but do not " to sex and sex" , ignoring the emotion. SUNY Stony Brook sociology professor John Gagnon suggested that in last month 's time, concerned about their sex time and frequency , and frequency of sex with a partner to discuss the appropriateness and seek to engage both physically and psychologically satisfied . toggle clamps
Twice a week

Expert Comment : This is a lot of people stick to the "standard frequency of sex ," but Indiana University institute of sexology expert , Dr. Erik Jensen said that this fact is not science. True science of sex frequency is based on physical needs and emotional sides to decide. The couple lived together a long time, frequency of sex will form a habit, become easy form than substance . At this point the couple must learn to break the routine , such as changing a fixed time and place. hose clamps
Two or three times a month

Expert Comment : If they accept this frequency, then do not worry too much. Houston City sex therapist Mary Euler Pini said that some of the couple's sex life , the quality is better than quantity . Especially after the age of 40 , one better than the quality of sex daily passion. The two sides together to learn new things, adventure and other activities will be closer together marital relationship , improve intimacy , sex naturally fall into place. bessey clamps
Monthly

Expert Comment : When sex couples only 1 month , both sides will need to carry out a sex openly a dialogue . Experts point out that this case is likely to be one of the body or the feelings of a problem, but the marital relationship can still sustain. The two sides should resolve the problem through the exchange , such as the wife to make greater efforts in sex , husband willing to lower their sexual requirements. best dildos
Several times a year

Expert Comment: Mary Euler Pini said that at this low libido may be the main reason. In fact, most men are sexually troubled . "Cause " There are many, such as hormone levels , stress and so on. Men often taboo to talk about their loss of libido problems, because it is an integral part of masculinity . In fact, both men and women , there should face the reality of decreased libido , promptly seek medical attention. black dildos
The above is about night time and the most High frequency of sex in detail. Therefore, in everyday life , the majority of my friends can know more about sex -related knowledge, actively carry out sexual health work , and strive to enjoy passionate sex life . glass dildos

In those women have experienced before , I'm just an ordinary man, along with my uncle to Beijing entrepreneurship , hard of hard work to make our company develop strong, successful career so I was relieved , but also began to have some " Sichun "idea. But I have not yet intend to get married , do not want to fall in love , that woman thought elusive , entangled entanglement go to a lot of trouble in his heart there is always lonely, to think in the middle of the night insomnia , can have a personal chat accompanied boredom .  black dildos o I went to play virtual cohabitation network , that is where he met the first chatted sexual woman. Then I found out it was a place to make people enjoy the release , so in that buy luxury villas , through a web site to know her . There, I felt an unprecedented excitement , we are filled with ambiguous and provocative language deeply moved the opposite sex, the kind of freedom , the kind of unbridled addictive . best dildos
And will go online to find someone to chat, chat chat kind of thing was so hot people , which he has no point of crooked mind yet. But we are all feeling, do not point out it. I told her that is so ambiguous developed, she is almost my age , married , because her husband is always traveling , so it sent through the Internet lonely . We chatted casually fiery manner for some time, I feel pretty good with each other they agreed to meet , the first meeting took place on relationships . I do not remember the details of that night , only impression of her stay in as white bread -like breasts big , had said she was in great shape , just look in general, be regarded as handsome only. bessey clamps
We did a meet again after no , I did not mention , she did not mention , in fact, I know of a woman above all the case, then I'm still wandering in that site , a long time , it becomes presumptuous and numb , not beating around the bush , more often that go straight up . The second girl chatted met a few hours , now I feel really great courage Beijing girl . She just graduated from schools overseas to Beijing looking for work , she said she did not stay to eat I feel very lonely , and I suggested that they take the initiative to invite her to dinner, then I still stay in mind , but also that would be entrusted with rice , so take the initiative booked a restaurant in town. Oh, hindsight felt she fuss , in that the above woman , are credible safe dating aim has always pure. black dildos
That is Zhou , I have to work overtime , chat with her when they meet , we agreed on my 6:00 in a place to meet after work . There was more than an hour to work, some estimates say over , when in the company of countless fantasies in my head is going to happen at the scene , and later I went early to the work place , then receive messages sent to her , " I am a little hesitate to meet with you . " I said: " Why ? afraid I eat you ? "At that time my heart felt her hand sentimental , can on the one hand and felt she was still alert psychological touches very good . But because she was angling my appetite , so I really wanted to see her that day , so some assurance persuasion , she finally appeared. thick dildos

That day I saw her , I really was very unexpected , although the photos from the Internet to see her , I know she looks nice, but she did not expect she is also so good , I did not bragging, I'm telling the truth , her height 168 skin and white, wears makeup , a goddess Fan . That meeting , she was good impression on me , and she said I am better than the pictures look good , we went dined, chatted late into the night , the atmosphere is very good, although did not happen , but occasionally a collision with her eyes , they made ​​me feel like her prognosis was good. See also the next few days a few times , eating chat shopping, to be honest, I kind of liked her. Then on the weekend , I took her back home , and in some cells gradually increased impulse , we hold together , kissing, petting , she was very bold , things like the pursuit of the bed stimulation. From her first time I tried to hold a woman , standing sex. An appearance handsome beautiful girl on the bed in such a frenzied performance, I can not imagine , but made me understand that sex is necessary for each person , and no one needs to find happiness through it . bluetooth vibrator
Then we also maintained a relationship for some time , but have gradually faded , and later met a few women , but just like any race I remember only the top few people , no one will remember after the ranking , I for them , but also I do not remember . However, in that the above chat, as long as there is time, in good faith , there will always be willing to work with you to develop a woman . pipe clamps
In fact, after going to bed with them , lamenting also with a lot of things , of course, I'm not saying I lament that they have feelings , but most of the Internet is so difficult to arrive lonely woman , many only like the fun of it , let me more and more for friends and say there is resonance. But not only in the network, even if it is real society, but also full of hormones taste . In fact, are a common thing , and some people pretend to live in reality , the network actually unbridled audacity , but are different choices each person only.
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Your consciousness is not the right sex and some people 's thinking is very old-fashioned, old-fashioned , and does not consider the feelings of others . Take sex , many people think that your posture is correct, or that the time to do as long as possible these are wrong. bent sex life did not get sex .  thick dildos
Wrong one , only men and women under the position is the correct formula
M on F -style sexual position , the West called missionary position , also known as legal position, they think only this position to express devotion to God , the rest belong to illegal postural orthostatic In fact, the main purpose is to sex entertainment , as long as health , sanitation , and both sides are willing to sexual position is correct , and that different sexual positions have different sexual experience , to make both husband and wife are always fresh , different sexual feelings. toggle clamps

Thus, for maintaining their feelings , to increase their appeal is beneficial to both , so for those who always use a sex position of the people, a change of sexual intercourse position sometimes bring unexpected rewards . pipe clamps
Error 2 , the longer the better
Many men think that the longer intercourse , the wife will get sexual pleasure is stronger, it is even more satisfied with their sex lives . Fact, this is a wrong understanding of the level of quality of life should be based on whether the two sides in the physiological and psychological get together to meet, that is, whether the mental and physical pleasure to be measured. hose clamps

Sexual intercourse should be based on the length of time the joint needs of sexual intercourse too long, men may feel bored or tired ; vaginal secretions of women will gradually decrease from wet to dry from the vagina , so that they can not enjoy sexual pleasure. bessey clamps

Of course, sex is too short , that premature ejaculation , which is a male sexual dysfunction , such a situation , there can be high-quality sex life , so that sexual intercourse can be short or long time , mainly in the two sides meet for the degrees .
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Overworked, long-distance cycling

Perineum and scrotum squeeze a long time in the state , on the one hand affect the secretion of the prostate and seminal vesicles ; On the other hand , testicular ischemia in a long time , and even minor injuries. These can affect semen quality . toggle clamps
Adverse psychological state

Psychological pressure is too large, too long in a state of tension , depression, anxiety , pessimism and sadness , etc. can lead to decline in semen quality , spermatogenic dysfunction, pregnancy rate. pipe clamps
Improper diet

Rich diet can provide all kinds of sperm to generate the necessary protein, calcium , zinc, selenium, phosphorus, magnesium , VitA and VitE other nutrients. If the partial eclipse , it is possible that the lack of these essential substances , leading to reduced sperm count and quality . Long zinc / selenium can lead to reduced male fertility , reduced sperm count , malformation rate increases, an increased risk of fetal malformations . Zinc rich foods include walnuts, liver, soybeans, vegetables , dried kelp, peanuts , shrimp , squid and so on. Studies have proven that proper zinc selenium can improve sperm motility , sperm morphology improve and increase fertility . hose clamps
Sedentary

Sedentary is currently the most common bad habits . Sedentary than 8 hours per day , for one year or more, the apparent decline in semen quality . Last more than three years , with poor semen quality is about 46%. Same study also found that lifestyle changes , abandon sedentary, increasing physical activity , exercise every day ( or brisk walking , jogging , swimming, ball games , etc. ) conducive to sperm quality improvement . bessey clamps
Smoke

Cigarette smoke contains so spermatogenesis mutagenic mutagenic substances, can not only cause damage to genetic material in cells , but also through the blood - testis barrier affect germ cell maturation and proliferation , resulting in increased sperm DNA strand breaks , sperm deformity rate increased. best dildos
Alcoholism

Ethanol on sperm density , motility, viability , morphology and fertilizing capacity have obvious damage effect. The extent of damage and started drinking age, alcohol consumption and duration are closely related. Long-term heavy drinking can lead to alcoholism, cause testicular atrophy, decreased libido , sperm deformity rate increases, the total number and density decreases. Chronic alcoholism is less than 80% of sperm viability , sperm deformity rate can be as high as 83%. Started drinking before age 18 significantly harm caused by alcohol even after the age of 18 adults . black dildos
Ethanol may indirectly by affecting the synthesis of sex hormones affect sperm , or direct damage to testicular seminiferous tubules seminiferous epithelium cells, the gonad degenerative changes occur , spermatogenic dysfunction or even atrophy. Ethanol also has a direct effect on sperm , which can cause sperm morphology changes include head off, middle neck swelling , tail curled and sperm agglutination . Alcohol -induced hypothalamic - pituitary - gonadal axis testicular dysfunction, can lead to testicular atrophy , sperm start, differentiation, development and the number , shape and function abnormalities. ejaculating dildos
Improper sexual frequency

Appropriate frequency of intercourse not only beneficial to both men and women 's physical health and mental balance, but also to improve semen quality, increase conception opportunities. However, too frequent sexual intercourse , sperm density and will reduce the number of affected spouses pregnancy, rather than , as some mistakenly believe that a friend of " plowing , no gain " ; course, frequency of sexual intercourse is too small, will also affect the spouse of pregnancy ; addition , long- time different room or do not ejaculate , sperm motility and fertilizing ability will decline, not abstinence longer the better the quality of sperm . WHO recommended 2-7 days of abstinence semen quality can best response at this stage the true male fertility . vibration vaginal