Why Your Cozy Winter Pajamas Might Not Be So Cozy After All

Experts are advising pajama lovers to reconsider wearing them to bed during winter nights, explaining that doing so may have certain drawbacks and consequences.

According to specialists, chilly winter temperatures often encourage us to sleep in warm pajamas, mainly because the cold seems to seep into our bones—even under a heavy duvet. However, they warn that this habit may do more harm than good. Sleeping in particularly thick and warm pajamas could lead to health issues and may also damage your bedding.

Mattress experts, according to some reports, say that wearing thick clothing to bed can have several potential downsides. They recommend choosing lighter pajamas instead, which are a better option than heavier ones.

The ideal sleeping temperature ranges between 17 and 19 degrees Celsius. Many winter pajamas are made from thick materials such as wool, which can raise body temperature and cause skin irritation. Additionally, experts argue that they may contribute to unpleasant odors.

Rebecca Swain, a mattress expert, stated: “Many of us take out thick, warm pajamas when temperatures drop, but we want to warn you: although they may keep you warm in freezing weather, our body temperature naturally rises overnight beyond the optimal sleeping range of 17 to 19 degrees. Thick fabrics can create an uncomfortable sleep environment and may also cause sweating, which can attract unwanted pests like dust mites.”

“This can worsen skin conditions and lead to rashes. Beyond skin discomfort, you may start to notice sweaty odors on your pajamas and sheets. Not only is it unpleasant to sleep in such clothing, but it is also unhygienic. Excessive sweat can contribute to dust mite problems, as moisture seeps through the sheets and into the mattress.”