Temperature triggers sleep and influences sleep depth | Matthew Walker

Parent Episode: Dr. Matthew Walker on Sleep for Enhancing Learning, Creativity, Immunity, and Glymphatic System

Duration and timing of light exposure are critical to our ability to sleep. But temperature plays a role, too – something easily observed in the sleep-inducing qualities of a cool bedroom. To fall asleep and stay asleep, the body's core temperature needs to drop by about 1 degree Celsius, roughly 2 to 3 degrees Fahrenheit. Cooler indoor temperatures mimic the natural pattern of cool evenings and are essential to reducing the body's core temperature. Manipulating the core body temperature through hot baths, showers, or saunas – which can have a paradoxical effect on reducing core body temperature – can have dramatic effects on our ability to fall asleep. In this clip, Dr. Matthew Walker describes the role of temperature in augmenting sleep.

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