text: what kind of device or clothing could i use to protect my male reproductive area from overheating while using? a hot spa/jacuzzi.  background information: fertility doctors recommend against overheating the testes. an example of overheating would be using a hot spa for more than 5 minutes. however, i used to enjoy using the spa quite a bit, but i want to be able to use it while protecting myself with some type of heat insulating device. don't worry about it.  you might kill off sperm in your system during the spa time, but those balls are hardier than you think.  sperm produced outside of the hot tub should be fine.  i used a very hot hot tub every day for years at the y--usually 110-112; also have 3 kids from that same time period.  if you do have very low sperm count, or the sperm fertility is very low, you might want to forgo hot tubs completely if you are trying to reproduce.  if you are not trying to reproduce, then enjoy the hot tub. we have too many experts out there telling us how we need to be living,  and we forget to just enjoy life.