What Is the Circadian Rhythm—and Why Does It Matter?
Your body runs on a natural 24-hour clock called the circadian rhythm. It's an internal timing system that helps regulate when you feel awake, when you get sleepy, and even when your body performs essential functions like hormone release, digestion, and temperature regulation.
This rhythm is heavily influenced by light and darkness. In the morning, exposure to sunlight tells your brain it's time to be alert and active. At night, when it's dark, your brain ramps up melatonin production, signaling it's time to wind down and sleep.
When your circadian rhythm is in sync, you feel energized during the day and sleepy at night. But when it’s disrupted—by things like travel across time zones, staying up late, or working night shifts—you might experience fatigue, poor concentration, mood swings, and sleep problems.
Tips to keep your rhythm in balance:
- Get sunlight in the morning
- Stick to a consistent sleep schedule
- Limit screen time before bed
- Avoid caffeine late in the day
- Dim your lights in the evening
Your circadian rhythm is more than just a sleep timer—it’s your body’s internal guide to staying healthy and balanced.
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