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Sleep and Exercise: How Sleep Builds Muscle and When to Train
Growth hormone is released mainly in deep sleep, which makes the night part of the training plan. How sleep builds muscle, what short sleep costs, and whether evening workouts hurt sleep.
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How to Reset Your Body Clock: Circadian Rhythm and Melatonin
Your circadian rhythm is your internal 24-hour clock and melatonin is its darkness signal. How to reset both with light, timing and a fixed wake time.
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