Sleep is a vital part of everyone's life. After all, humans spend around a third of their days sleeping. Most people have difficulty getting to sleep from time to time. One trick they may not have tried is sleeping with their socks on.

It may seem like wearing socks in bed would overheat the feet. But, in reality, this habit might assist the body's internal temperature regulation.

A study from 2007 reported that adults who wore either normal or heated socks in bed got to sleep faster.This is because a person's core body temperature drops during the night, reaching the lowest temperature around 4 a.m. The average body temperature is 37°C, but this varies over the course of 24 hours.

Warming up the feet and hands makes the blood vessels dilate, a response that is called vasodilation. This releases heat through the skin and helps to lower core body temperature. This, in turn, sends a message to the brain that it is bedtime.

Research suggests that warm skin is associated with getting to sleep faster.

A person's core body temperature is affected by their biological clock, also called their circadian rhythm. Circadian rhythm controls the timing of sleep, making a person feel sleepy at night and awake in the morning.

Body temperature gradually rises during the day, peaking in the late afternoon when people feel most awake and alert. Body temperature then decreases during the night, making a person feel sleepy.When someone begins to fall asleep, the temperature of their body decreases. This could be because the body is conserving energy for other functions.

If a person sleeps with their socks on, this may help with their temperature regulation cycles.

Temperature regulation is an important part of falling asleep. Wearing socks in bed increases blood flow to the feet and heat loss through the skin, which helps lower core body temperature. In turn, this helps a person get to sleep faster.