What are biological clocks?

Biological clocks are like tiny timers inside your body that help you know when to sleep, eat, and wake up.

Imagine you have a toy car that goes vroom every morning at 7:00. That’s kind of like what happens in your body, there's something inside you that tells your brain it's time for breakfast or bedtime.

Your biological clock is like a friend who keeps track of the day. It starts working when you're born and goes on for your whole life. This friend uses light from the sun to know what time it is, just like how you might look at the sky to see if it's morning or night.

If your biological clock gets confused, like when you stay up too late playing video games, you might feel sleepy during class. But don’t worry, it’s just a little tired and will catch up soon!