At first glance, this seems like a strange habit, but there’s a scientific explanation. Our bodies naturally lower their body temperature before bed—it’s part of the circadian rhythm. When our core temperature drops, the brain receives a signal: it’s time to sleep.
Content
- What’s happening
- Why does this work?
- Tips for better sleep
️ What’s happening
The legs—especially the feet—contain numerous blood vessels close to the skin’s surface. When you lift one leg out from under the covers, the skin cools, the blood vessels dilate, and the body releases heat more quickly. This helps the body lower its core temperature and helps you fall asleep faster.
