It is unclear whether sexual activity makes us healthier or if healthier people have more sexual activity. None the less, research is showing that sex has great health benefits, when in the context of healthy, monogamous relationships.
Sex can ease depression and stress. Orgasms can be a great pain reliever, because they release oxytocin into the body. It can boost cardio health and fight aging. Remember, though, this does not count in risky sexual behavior, but in monogamous and stable relationships.
A surprising stat found was that women who perform oral sex, and swallow, are at lower risk of developing preeclampsia. Not just that, researchers also found that it can help lower blood pressure.