In the latest iteration of Things People Are Talking About on TikTok, users of the app are posting about — and arguing over — whether or not to wear underwear during workouts. Some are proudly sharing videos saying they're on , while others are commenting: "I feel like that's a bad idea." Whether you're already Team Commando and love it, curious about ditching underwear during workouts, or completely aghast at the thought, the discussion begs the question: is it OK to work out without underwear? And given the choice between the two, which is better for your vaginal health? Great news: board-certified obstetrician and gynecologist weighed in here to set the record straight — and no matter which side you're on, you might be surprised by her answer.
, MD, is a board-certified obstetrician and gynecologist based in Washington, DC. Believe it or not, Dr. Horton recommends wearing underwear when working out.
"The vagina has normal [good] bacteria that prevents the overgrowth of bad bacteria like and yeast. However, a warm, wet environment after a sweat sesh can be a breeding ground for infection," she says. Wearing underwear adds another layer that can trap moisture and cause irritation, itching, and burning.
And if you're worried about panty lines showing through your leggings, going commando for workouts is better than wearing a thong, Dr. Horton says. "The thong's friction and movement can introduce E.
coli from the anus into the vagina and lead to potential urinary and va.