Many people sleep with one leg outside the blanket without thinking twice. While it may seem like a random habit, there are practical reasons behind it.
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This simple position can help the body relax, regulate temperature, and prepare for deeper rest, making it easier to fall asleep naturally and stay comfortable through the night.
One major reason is temperature control. For the body to shift into sleep mode, core temperature needs to drop slightly. The feet contain blood vessels that release heat efficiently, so exposing one leg helps excess warmth escape.
This gentle cooling sends a signal to the brain that it is time to rest, often helping sleep arrive faster and feel more refreshing.