Why do I get sleepy?

Like all animals, our bodies follow a 24-hour schedule known as a circadian rhythm, sort of an internal alarm clock that keeps time by tracking light and darkness.

Are You Always Tired? 33 Reasons You're Tired All the Time

5 reasons why you feel sleepy all the time

Why You Get Tired and Sleepy When You're Sick - Sleep Advisor

8 reasons why you're not sleeping - Harvard Health

Carcolepsy: Why Do We Get Sleepy in Cars?

Why Do I Get Sleepy from Drinking Coffee?

After Eating Feel Sleepy? Here's Why and How to Avoid – 27GROUP

sleepfoundation.org on Instagram: Why Do I Get Sleepy After

Why 90% Students feel sleepy while studying