Can wearing brief underwear make a man sterile?

Answer 1

Wearing brief underwear will affect the potency of the reproductive organs if too snug or tight. The underwear will not allow the scrotum to "breathe" if too snug or hugging the area, due to friction, body heat, or lack of circulation. The underwear needs to be in the middle of snug and loose, such as in a boxer brief instead of a brief.