Your body has an internal clock, like a little timer that tells you when to sleep and when to wake up. When you fly across the world, your timer gets confused because it thinks it's still in your old time zone. This makes you feel tired or sleepy at the wrong times, that’s jet lag! It’s like your body is still on sleep mode from yesterday but you’re trying to be awake today.
Examples
- You fall asleep on the plane, but you wake up groggy because your brain didn’t get enough light to know it’s time to be awake yet.
- Your friend flew west and got more sleep, while you flew east and barely got any.
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See also
- How Does The Science of Jet Lag (and how to beat it) Work?
- How Does Circadian Rhythm and Your Brain's Clock Work?
- How your body clock rules your life | Wellcome?
- What are biological clocks?
- How Your Body’s Internal Clock Might Be Messing With Your Sleep?