What Causes ‘Circadian Rhythms’ and How Do They Affect Our Lives?

Your body has a kind of timer that tells you when to sleep and when to wake up. Imagine your body is like a little robot with a watch inside it, this watch keeps track of time even if there’s no light or sound around. When the watch says, ‘It’s bedtime,’ your body starts getting sleepy, and when it says, ‘Time to get up,’ you feel more awake. This timer is called your circadian rhythm, and it helps control many things in your life, like how well you sleep, how much energy you have during the day, and even how happy you feel.