Sex with 21 Women Lowers Risk of Prostate Cancer
Sleeping with more than 20 women protects men against prostate cancer, a study has suggested ...
Link: http://www.telegraph.co.uk/science/s...mics-find.html
I don't think sleeping is exactly what keeps men healthy in this study.
Clearly, if you need help to get to the magical 21+ number for medical reasons, see your provider.
