The many health benefits of sex

Apart from being so much fun, sex is also really good for your health. Check out the web site:
http://www.webmd.com/sex-relationships/features/10-surprising-health-benefits-of-sex
Some of my favorites:

• 42 half-hour sessions [of making love] will burn 3,570 calories, more than enough to lose a pound.
• Having sex and orgasms increases levels of the hormone oxytocin, Higher oxytocin has also been linked with a feeling of generosity. So if you're feeling suddenly more generous toward your partner than usual, credit the love hormone
• men who had five or more ejaculations weekly while in their 20s reduced their risk of getting prostate cancer later by a third

I would like to know the benefit of sex on athletic activity. Should we quarantine our athletes from sex before the big game? or encourage a diet of plenty?