Behavioral sleep disorder¹ expert Michelle Drerup said, "I know this may sound counterintuitive, but putting on socks to warm your feet may actually lower your core body temperature and help you fall asleep faster.

Normally, the core body temperature of adults during the day ranges from approximately 36.1 to 37.2 degrees Celsius², with an average of 37 degrees Celsius. Children under the age of 10 may have slightly lower body temperatures. But when night falls, the core body temperature drops by one to two degrees, putting the body into a state of readiness to fall asleep.

It is reported that a process called "distal vasodilation" helps to cool down the human body: it increases the heat emitted through the skin by dilating³ blood vessels⁴ in the hands and feet. Therefore, when people put on socks to keep their feet warm, the core temperature will further decrease, allowing people to sleep more soundly.