1. Decreased prostate cancer A study in the Journal of the American Medical Association demonstrated that men who had 21 or more ejaculations a month were less likely to get prostate cancer than those who’d had 4 to 7 ejaculations per month.
2. Toned pelvic floor muscles Sex tones the pelvic muscles that increase a woman’s sexual pleasure. The same muscles support the uterus, bladder and bowel, thus protecting against incontinence later in life.
The basic Kegel exercise tones pelvic floor muscles and involves tightening the muscles as if trying to stop the flow of urine, counting to three, then releasing.
3. Improved sleep Researchers find that the oxytocin released during orgasm promotes better sleep in addition to better blood pressure readings and a healthy weight.
4. Regularized periods Studies at Columbia and Stanford universities found that women having sex at least once a week also have more-regular menstrual cycles than women who had infrequent sex.
5. Extended sexual life Marriage therapist Michele Weiner Davis (author of The Sex-starved Wife) observed, “The more you have sex, the more likely you’ll be to continue to produce testosterone, one of the primary hormones responsible for sexual desire.” (True for both women and men)
6. Increased happiness A recent study by the National Bureau of Economic Research finds that sex makes us happier than does having money. The number-crunchers quantified the resulting level of happiness as the same as earning $100,000 per year. (My Take: And no taxes—what’s not to like?)
7. Delayed aging Dr David Weeks, a neurophysiologist at Scotland’s Royal Edinburgh Hospital and author of Secrets of the Superyoung, says, ”An active sex life slows the aging process.”
8. Induced natural labor When a woman’s reached term, both her contractions during orgasm and the presence of semen can induce labor naturally.
Semen contains prostaglandins that, when in contact with the cervix, help it dilate and induce natural labor.
Sources: Discovery News, March 11, 2013 Women’s Health Magazine, July 4, 2011 webmd.com