Yet another post about how science indicates that sex is good for you! In this case, a long-term study followed adult men for 18 years and found that frequent ejaculation reduces the risk of prostate cancer.

It found that men ages 20 to 29 who ejaculated 21 times or more each month were 19 percent less likely to be diagnosed with prostate cancer than those who ejaculated less often, between 4 and 7 times per month.

And it wasn’t just young guys who saw the benefit: Men 40 to 49 who ejaculated at least 21 times per month reduced their risk of developing prostate cancer by 22 percent.

Won’t be having sex 21 times this month? Don’t worry: The study showed a dose-dependent relationship with ejaculation and prostate cancer risk, meaning that the more you do it, the more your risk decreases, she says.

So even ejaculating just a few more times each month can likely bring some benefits to your prostate.

Twenty-one times a month means having sex about five times a week on average, which is more than most married couples. However, if you follow our steps to make sex a daily habit you can at least improve your batting average. If you have a family history of prostate cancer this can be even more important.

And wives, don’t do it just for your husbands — check out some of these links to learn about how sex is good for women’s health:

• Sex keeps you slim and happy
• Sex is good for your brain
• Sex boosts women’s immune systems
• Swallowing semen cures morning sickness

Frequent sex with your spouse is as important for your health as eating right and exercising.