Sleeping in underwear might seem perfectly normal, but health experts say it carries risks you should be aware of. Wearing underwear at night traps heat and moisture, encouraging bacterial and fungal growth which can cause infections like yeast infections and UTIs.
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Even high-quality breathable fabrics don’t fully prevent this risk. For men, the heat buildup around the testes may decrease sperm production. Skin health suffers as underwear friction combined with sweat can lead to rashes and fungal infections.
Comfort is another issue—underwear can bunch and dig into skin, disturbing sleep quality. Experts recommend giving your skin a break overnight by sleeping commando or choosing loose, breathable sleepwear to lower infection risk and improve comfort.
