Rx for Men: More Sex

If men truly want to keep having sex into their old age, their best bet is to have lots of sex right now, says a new study. Finnish researchers found that the more sex men have in middle age, the more likely they are to keep their erectile function as they get older. Men who don't have intercourse at least one a week are four times as likely to suffer ED (erectile dysfunction) than guys who get it on three times a week. Researcher Juha Koskimaki tells CBSnews.com that the male reproductive system is similar to a muscle or to aerobic capacity: If you don't use it, you're bound to lose it. "Regular sexual activity preserves potency in a similar fashion as physical exercise maintains functional capacity," he says.