Infertility
Hot tubs - are they bad for men?
Yes. High temperatures can kill sperm. That is why the scrotum is located outside the body -- to act as a kind of "refrigerator" to keep the sperm cool.
So, it is a good idea to avoid hot tubs, saunas, and steam rooms. Wear loose pants and underwear.
Source: This information is used with permission and courtesy of RESOLVE, the National Infertility Association.