http://www.my-wild-side.com/sexual-abstinence-is-bad-for-you-many-reasons-why-you-should-have-lots-sex.html
http://www.aclu.org/reproductive-freedom/helping-teens-make-healthy-and-responsible-decisions-about-sex

Sex helps stave off depression and stress, and can aid with sleep. Specifically, the release of semen inside the female body brings about effects similar to those of an antidepressant drug, for women. Condom use of course prevents this effect from taking place.

Orgasms also provide us with pain relief: almost doubling our endurance or toughness overall in that regard.

Women who perform oral sex and swallow the semen may also enjoy lower blood pressure as a result. This element can be especially useful for pregnant women, who can face the risk of preeclampsia (dangerously high pressures).

The higher the frequency of sex you have, the more likely your sex is also increasing your cardiovascular health and stamina. Thereby protecting you from heart attacks.

Higher frequencies of ejaculations help protect men from developing prostate cancer.

Sex also seems to accelerate physical healing of wounds.

Frequent sex helps protect women from urinary tract infections.

In general, the more sex you have, the longer you're likely to live-- and enjoy better health over that span, compared to the alternative. Not to mention be happier, too!

The bodily fluids usually swapped in sexual encounters can help boost your health and healing.

Orgasms offer you a way to forget about your troubles for up to five hours (via a chemical reordering of the brain).

Every time you have fun with your partner it can help pave the way for still more fun in the future too, by making your brain associate them ever more strongly with pleasure in your emotional center. In this way you and a loved one can literally 'train' yourselves to make one another ever happier over time.

Sex can offer women relief from PMS.

Over time, orgasms add more sheen to women's hair via hormonal effects.

Sex offers ten times the relaxation power of valium. And helps protect women from both osteoporosis and Alzheimer's.

It just may be that regular semen exposure (oral or vaginal) boosts women's protection against certain types of cancer. The drug industry is trying to develop a freeze-dried semen pill for women in order to make these health benefits more easily accessible.

Regular sex can improve your sense of smell, protect your heart, aid in weight loss or maintenance, increase general physical fitness, strengthen both muscle and bone, boost the immune system, and improve bladder control.

Semen may even help prevent tooth decay when taken orally.

Indeed, infrequent or diminished desire for sex is often a sign of deteriorating health!

"...there is little or no risk of a woman overdosing on sex."

"Those who abstained from any form of sexual activity at all had the highest blood pressure response to stress."

"And greater frequency of intercourse is associated with greater benefits."

"Sex stimulates the brain and makes people more intelligent, according to a top German researcher."

Both heterosexual and homosexual folks can get hormonal boosts from sexual activity which will make them feel better about themselves and sexier.

Interestingly, these particular hormonal changes were the largest in those people maintaining intimate relationships with more than one partner at a time. So it may have something to do with a competition aspect to sexual behavior.

"Fans of abstinence had better be sitting down"

"...men who reported the highest frequency of orgasm enjoyed a death rate half that of the laggards."

"...there is little or no risk of a woman's overdosing on sex. In fact, she says, regular sessions can not only firm a woman's tummy and buttocks but also improve her posture."

"Women who abstain from sex run some risks."

DAN CHILDS ABC News Medical Unit Nov. 29, 2007

"Twins who had sex earlier than their twin siblings were less likely to become delinquent."

"In the January American Journal of Public Health, a team from Columbia University linked delays in sexual activity until after the teen years to problems in sexual functioning later in life. The researchers noted that the finding "lends credence to research showing that abstinence-only education may actually increase health risks."

"If you really want to train your brain, then eat dark chocolate, have plenty of sex and follow the Scandinavian example of having cold meat for breakfast."

"...of the seven different chemical reactions that the brain undergoes in the sexual process, from contemplating intercourse to achieving orgasm, four help the thinking process. The ensuing increase in levels of the 'trust' hormone, oxytocin, for example, increases readiness to think of novel or risky solutions.

Similarly, the post-coital rise in serotonin levels aids both creative thinking and calm, logical decision-making."

"...desire can crumble over the years, often under the weight of physical problems, emotional turmoil and, of course, troubled relationships.

One way to protect yourself: Have lots of good sex now (or when convenient). Not only will you be giving your partner, if you have one, extra incentive to stick around, you'll be building a buffer around your libido. Frequent, stimulating sex primes the brain to want and expect more sex later in life..."

"...a properly primed libido can even withstand a shutdown of testosterone, the male hormone that helps fuel sex drive. He found that about one-third of men with extremely low testosterone levels (often due to testicular disease) still had frequent, satisfying sex. He surmised that these men had become so accustomed to sex that they could be aroused without help from hormones."

"Promiscuous females are more likely to give birth to healthier offspring, researchers at The Australian National University have found."

"...masturbation is actually quite beneficial for a man’s health. It’s a natural stress reliever and is used as a sleep aid by many men.

Masturbation has even been clinically proven to reduce migraines and other types of pain. And, if that’s not health positive enough for you, recent studies suggest frequent masturbation -- seven times a week or more -- greatly reduces a man’s chances of developing prostate cancer."

"...regular sex has six amazing health benefits. It can increase a youthful appearance, promote the production of germ-fighting antibodies, strengthen a woman's pelvic floor, burn calories, stabilize a woman's menstrual cycle and offer natural pain relief in the form of orgasms."

"The best that modern science can say for sexual abstinence is that it's harmless when practiced in moderation."