According to experts, wearing tight underwear like briefs creates a temperature increase that prevents sperm from growing and developing properly. A recent Harvard study found that men who wore looser underwear, like boxers or boxer-briefs, had about 25% more sperm in their collected samples. Researchers believe that tight underwear could jeopardize the fertility of men who already suffer from low sperm counts. However, it’s possible to reverse damage caused by wearing tight underwear by switching to a less confining option. MORE HEALTH SCIENCE CONTENT: Why Humans Can’t Regrow Teeth https://www.youtube.com/watch?v=ZMThW… How Humans Are Trying To Live Forever https://www.youtube.com/watch?v=f_Kxr… Why Babies Can’t Eat Honey https://www.youtube.com/watch?v=UVZET…