The Less-Obvious Risks
However, it’s not all good news. Wearing tight or synthetic socks overnight can trap moisture and heat, creating the perfect breeding ground for fungal infections like athlete’s foot. Dermatologists warn that poor airflow may lead to skin irritation, dryness, or even bacterial buildup.

For people with diabetes or poor blood circulation, tight socks can restrict blood flow and increase the risk of foot ulcers — a serious complication. Overheating the feet can also disrupt your body’s natural temperature drop during sleep, sabotaging deep REM cycles and leaving you tired the next day.

Expert Verdict: When It’s Safe (and When It’s Not)
Do it: Use loose, breathable cotton or bamboo socks.
Avoid it: Skip tight, nylon, or thick wool socks, especially if you have diabetes, neuropathy, or sweaty feet.
Pro tip: If your feet get hot during the night, kick the socks off — your body is telling you it’s time to cool down.
Bottom line? Sleeping with socks can be a sleep hack for some… and a health hazard for others. Listen to your body, choose the right material, and you’ll wake up refreshed instead of regretting that extra layer.

(Sources: Sleep Medicine Journal 2023, American Heart Association, WHO podiatry guidelines. This article is for informational purposes only and is not a substitute for medical advice.)