Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day

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Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day
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Your body follows a circadian rhythm that influences everything from how well your medications work to the best time for exercise.

Syncing your circadian rhythm to a natural light-dark cycle could improve your health and well-being. nambitomo/iStock via Getty Images Plus

In short, there is ample evidence that your biological clock is critical to your health. And chronobiologists like me are studying how the day-night cycle affects your body to better understand how you can modify your behaviors to use your internal clock to your advantage. Your hormones fluctuate rhythmically over the course of the day. The stress hormone cortisol typically peaks in the morning, while the sleep hormone melatonin typically peaks in the night. Pikovit44/iStock via Getty Images Plus

Getting the most out of exerciseCircadian clocks also provide a potential answer to when is the best time of day to maximize the benefits of physical exercise.

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