The dip in the middle of the seat is to relieve pressure on the prostate & that's a good thing, they would have to be some mighty small balls, & as a reproductive aid no. Like zeerith said excessive heat can lower sperm counts. I had a friend that was trying to have a baby but couldn't & they were trying for a year I said, if you go surfing with me (this was winter) for two weeks I guarantee she will get pregnant & like clockwork 2 weeks later she was pregnant. they dont just hang outside the body for y'all to play with, balls like to be cool.