How can wearing tight pants affect a man’s fertility?

Studies are not clear on whether things like wearing briefs or tight pants or sitting in a hot tub can harm a man's fertility. The testicles are located outside a man's body to keep them cooler so the sperm can mature at the proper rate. If you're putting on briefs or tight pants, especially if you're getting hot for other reasons, you can make it a little uncomfortable for the sperm and that may influence fertility rates.

Hot tubs can present another temperature issue for men. Most of the time, folks will be okay if they spend less than half an hour in a really hot environment. But if you go past that period of time, and some folks do, you probably can affect fertility.

Some men are concerned that riding a bicycle can affect their fertility, but impotence, not fertility, could be the issue. A bicycle seat can restrict blood flow to the penis, so it's important to make sure the seat fits your body.

This is important for women, too, because if women don't get blood supplying to their equivalent of the penis, which is the clitoris, it doesn't get hard. And so during orgasms or during sex, it won't get hard because blood's not going to it normally, so it can influence the quality of sex.