Your brain’s suprachiasmatic nucleus (SCN) serves as the master biological clock that regulates your body’s circadian rhythms.
Your body’s central circadian clock is not alone; peripheral clocks are found in various tissues and nearly every organ throughout your body, including the liver, lungs, heart and skeletal muscles.
Shift work, jet lag and many other factors can throw your circadian rhythm off kilter; your body relies on zeitgebers — external cues that help regulate and synchronize your circadian rhythms — to get back on track.
Exposure to bright light, ideally from sunlight, during the day and avoiding artificial light at night is a powerful method to keep your circadian rhythms in sync.
Meal timing also influences your circadian rhythms; it’s best to avoid eating before sunrise or after sunset and to stop eating at least three hours before bedtime.
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