Actually, alcohol in excess, can lead to a lowering of your core body temperature and place you at risk for hypothermia.

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"We aren't sure why activity primes your body for sleep so well, but it's likely a combination of factors, including lowering your core body temperature, increasing the sleep-promoting hormone melatonin and supporting a biological need to restore energy levels and repair cells and tissues when you sleep, " Cardinal says.

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People on either of the calorie restriction diets had reduced average core body temperature, which has been previously suggested to be an aid to living longer.

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When the body's core temperature drops below 95 degrees Fahrenheit, a mild form of hypothermia takes hold.

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