Myth or fact: You should never sleep in your underwear

For women, she says, tight-fitting underwear may increase the risk of vaginal infections due to moisture build-up. For men, it may lead to discomfort and increased sweat around the groin area, potentially affecting skin health.

Potential hygiene risks associated with sleeping in underwear

For people with sensitive skin or conditions like eczema, Dr Vinutha explains that sleeping in underwear can exacerbate skin irritation due to trapped heat and moisture. “Bacteria and yeast thrive in warm, moist environments, which can lead to skin infections, particularly in areas prone to sweating, such as the groin.” 

Additionally, people with allergies to synthetic fabrics or dyes might experience rashes or discomfort. Wearing breathable, loose-fitting, cotton underwear or opting for no underwear can reduce these risks and promote better skin health.

Bacteria and yeast thrive in warm, moist environments, which can lead to skin infections (Source: Freepik)

Effect of sleeping in tight or synthetic underwear on body temperature regulation

Sleeping in tight or synthetic underwear can interfere with the body’s natural temperature regulation. Tight underwear constricts airflow, while synthetic fabrics, such as polyester, trap heat and moisture. 

Dr Vinutha mentions, “This can lead to overheating at night, disrupting sleep quality and contributing to sweating or skin irritation. In contrast, natural fabrics like cotton or going without underwear allow the skin to breathe more effectively, helping the body maintain a consistent temperature and enhancing overall sleep comfort.”

Benefits of sleeping without underwear for reproductive health or comfort

“Yes, sleeping without underwear can have benefits for reproductive health. For women, it can help reduce the risk of vaginal infections by allowing airflow, reducing moisture build-up, and preventing the growth of bacteria and yeast,” says Dr Vinutha. 

For men, she continues, “going commando” can help regulate testicular temperature, which may support sperm health and overall comfort. “While more research is needed, there are studies suggesting that loose clothing or sleeping without underwear can promote better genital hygiene and comfort,” says Dr Vinutha.