This Is Why You Can’t Keep Your Eyes Open When You’re Tired
Your eyelids feel heavy for a reason
Published in
2 min readJan 22, 2020
Surely you’ve experienced the phenomenon of feeling like you can’t possibly keep your eyes open for one second longer when you’re tired — in the predawn hours feeding a newborn or while attempting to stay up and watch your favorite show. Why does this eyelid heaviness happen?
