Your body temperature drops during deep sleep

During deep sleep, your core body temperature naturally dips by about 1 degree Celsius. This crucial physiological change is part of your body's circadian rhythm, helping to conserve energy and support vital tissue repair. As you drift into deep sleep, your metabolism slows, and blood flow increases to your skin, allowing heat to escape efficiently. This cooling effect is essential for quality sleep, impacting everything from your immune system to memory and mood. Disruptions, like a warm room, can interfere with this vital process.