Ever feel like your body has a mind of its own? One day you're a morning lark, ready to conquer the world at dawn; the next, you're a night owl, most productive when the rest of the world is asleep. This isn't just a quirk of personality; it's the work of your —your body’s internal 24-hour clock.
Your primary timekeeper is the , regulated by a "master clock" in the brain called the suprachiasmatic nucleus (SCN). This clock responds to external cues—primarily light and darkness —to signal when it’s time to be awake and when it’s time to sleep. Clocks and rhythms
If you've been feeling groggy or "off," your rhythms might be "misaligned" due to late-night screen use, irregular meals, or caffeine. Here is how to reset: Ever feel like your body has a mind of its own
: A consistent rhythm makes it easier to fall asleep and stay asleep. Your primary timekeeper is the , regulated by