People who have healthy sex life are not only happier but also healthier than those who don't. Here are 9 health benefits you never knew sex can provide:

1) Rocking Immune System: Regular sex ensures higher levels of what defends your body against germs, viruses, and other intruders.

2) Lowers Blood Pressure: One landmark study found that sexual intercourse specifically (not masturbation) lowered systolic blood pressure.

3) Great Exercise: Sex is a really great form of exercise. It is a muscular exercise that burns calories and increases your heart rate.

4) Lowers Heart Attack Risk: Great sex life is good for your heart. It not just raises your heart rate, sex helps keep your estrogen and testosterone levels in balance.

5) Reduces Pain: Getting an orgasm can block pain. Vaginal stimulation can block chronic back and leg pain and can reduce menstrual cramps, arthritic pain, and in some cases even headache.

6) Improves Sleep: People usually dose of quickly after sex and tend to get a sound sleep.

7) Relieves Stress: Sexual arousal releases a brain chemical that revs up your brain's pleasure and reward system. Sex and intimacy relieve you of stress and boost your self-esteem and happiness too.

8) Reduces Risk Of Prostate Cancer: A study, published in the Journal of the American Medical Association revealed that men who ejaculated frequently (at least 21 times a month) were less likely to get prostate cancer.

9) Helps Women's Bladder Control: Incontinence, a problem that affects about 30% of women at some point in their lives is helped with a regular sex. Good sex is like a workout for their pelvic floor muscles. An orgasm causes contractions in those muscles thus strengthening them