Regular sex appears to be good for your heart, at least if you're a man.

"The New England Research Institute reported last year that regular sex appears to be good for your heart, at least if you're a man. Researchers at the institute followed more than 1,100 men for more than 16 years, and found that men who had sex twice a week were as much as 45 percent less likely to suffer a dangerous cardiovascular event than those who had sex once a month or less."

http://www.sportsgeezer.com/sportsgeezer/heart_health/