Wearing socks to bed may seem like a simple comfort habit, but research suggests it can also improve sleep quality. The body needs to lower its core temperature slightly before sleep, and keeping your feet warm can help this process happen more efficiently.

According to research supported by the American Heart Association, warming the feet encourages blood vessels to expand through a process called vasodilation. This allows heat to move away from the body’s core and signals to the brain that it is time to rest. As a result, many people may find it easier to fall asleep.

A 2023 study published in Sleep Medicine found that people who wore socks to bed fell into deep sleep up to 20 percent faster than those who slept barefoot. Reaching deep sleep sooner can support better recovery, improve overall sleep quality, and help the body feel more refreshed the next day.

Warm feet may also improve circulation during the night. Better blood flow can reduce leg cramps and muscle discomfort, both of which are common reasons for interrupted sleep. For people who occasionally experience poor circulation, this simple bedtime habit may provide added comfort.

Beyond the physical benefits, warmth often creates a feeling of relaxation and security that helps the nervous system settle down. For individuals with Raynaud’s syndrome or sensitivity to cold, wearing socks to bed can be a practical, drug-free way to stay comfortable and support a more restful night’s sleep.