running naked would be best but then again there will likely be other issues. jock itch is also called tinea cruris. this is a yeast infection and yeast loves the warm dark and moist environement (sweating) common in the groin area. cotton is a natural fiber and tends to breathe better than most synthetics but some synethetic are outstanding when it comes to air circulation. i have no problem with cotton or those special quick-dry synethetics but not all underwear is created equal. boxers allow my air than tighty whities assuming we are just talking about men.
does synthetic underwear cause jock itch? . all the running and exercise people say to avoid cotton since it gets wet and causes irritation. however jock itch prevention says to go with cotton undies. which is it? to cotton or not to cotton?