A good sex life is one way to stay happy, healthy, and fit.
For example, sex can actually cause you to get fewer colds. Research has shown that couples who have sex weekly have a 30 percent increase in immunoglobulin A, an antibody that fights infection. Sex can also help women have a more predictable period schedule, as a result of being exposed to male pheromones.
In addition, having sex reduces stress -- for physiological as well as emotional reasons. Sex activates a nerve that has a calming effect. Having sex also lowers blood pressure, which reduces the risk of heart disease.
Sex can even reduce LDL (“bad”) cholesterol and increase HDL (“good”) cholesterol!