To wear or not to wear underwear (in addition to your black stretchy pants) is only one of many questions fit ladies have. But whether you're a commando convert or a boy short believer, there are a few things you should know about health and hygiene when it comes to your wonder down under. We asked our panel of experts to offer panty-related advice for ladies who lunge (and crunch, bike, hike, run, and swim).
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Whether or not you skip undies is up to you—panty lines are totally a personal preference—but there are some compelling reasons to consider covering up.
"Bacteria and yeast love a moist and warm environment," says Doerthe Brueggmann, M.D., of Health Goes Female. "So a very effective and simple protection is to wear any underwear under your workout gear to catch sweat and developing moisture. This is why it's not a good idea to go commando!"
However, David Bank, M.D., founder and director of the Center for Dermatology, Cosmetic & Laser Surgery, adds that fabric choice is crucial when it comes to your workout gear. "If you frequently wear bottoms with moisture-wicking capabilities, then underwear is not necessary." And thanks to the latest innovations in fitness apparel, many pants and shorts have built-in undies made from wicking, antibacterial fabric, like the Get Set Go shorts from Under Armour ($40; underarmour.com).