Orgasm is Good For You
According to JAMA (the Journal of the American Medical Association), 43% of American women suffer from some form of 'Female Sexual Dysfunction -- often placing the blame on themselves for their inability to reach orgasm. Stop blaming yourself. If you are alone, masturbation will help you find what feels right for you. If you have a partner, talk to them. Often the clitoris is under stimulated during sexual intercourse - which is how many women have an orgasm. If you have orgasms from your cervix being stimulated, tell your partner this. (Or whatever else does it for you).Orgasms: Relieve tension! The faster heart beat, the increased blood flow and muscular tautness associated with sexual pleasure all come to a relaxing conclusion with an orgasm, and in the process relieve tensions pent up in your nervous system.
Orgasms: Help you sleep better. While an orgasm is followed in the male by a quick drop in blood pressure and sudden relaxation, the effect on women is more progressive but no less important. Orgasms act as a natural tranquilizer. That wonderful release of endorphins is very calming.
The Health Benefits of the Sex
"Sex is more than a hormonal discharge and momentary pleasure. Increasingly more researches point the health benefit brought by sex. And it's not about mental and emotional health, whose balance is obviously tuned by sex. The lack of sex is known to induce fromanxiety to paranoia and depression...
A 10 year research made on 1,000 middle-aged men at Queens University in Belfast, Ireland, revealed that sex on a regular basis is not just healthy, but increases our lifespan.
Men of similar age and health with the highest orgasm frequency displayed half of the death rate of men who did not have such frequent orgasms. Researchers believe this is due to the stress drop induced by sex.
But sex also boosts our body's senses, at least the smell. After the orgasm, a rise of the hormone prolactin occurs inside your body. This chemical makes the brain's stem cells to grow new neurons in the olfactory bulb, where smell is formed, increasing a person's olfactory abilities.
Sex is also a pain reliever: immediately before orgasm, levels of the hormone oxytocin increase by five times, triggering the release of endorphins. These chemicals alleviate pain, from a minor headache to arthritis or migraines. So, a woman's headache is rather a good reason for sex, not against it." -Stefan Anitei
Orgasm — A Total Body Response

The most characteristic physical feature of orgasm is the sensation produced by the simultaneous rhythmic contractions of the pubococcygeus muscle (pc muscle). Along with contractions of the anal sphincter, rectum and perineum, the uterus and outer third of the vagina (the orgasmic platform) for women, and the ejaculatory ducts and muscles around the penis for men, this constitutes the reflex of orgasm.
The first few contractions are intense and close together, occurring at about 0.8-second intervals. As orgasm continues, the contractions diminish in intensity and duration and occur at less frequent intervals.
Orgasm Differences Between Men and Women
Despite the anatomical differences between male and female genitals, orgasms in men and women are physiologically and psychologically, or subjectively, very similar."
Source: Discovery Health