We’ve all had those mornings — laundry’s not done, and we wonder, Can I wear this pair again? It might seem harmless, but hygiene experts say rewearing underwear, especially after sweating, can lead to more problems than you think.

Why Clean Underwear Matters

Underwear sits close to your most sensitive areas, collecting sweat, oils, dead skin, and bacteria throughout the day. Rewearing traps all of that against your skin again — adding more heat and moisture. Occasionally rewearing a pair might be okay, but doing it regularly can lead to: