Why You Jerk Before Sleep

Your brain thinks you’re falling… right before you fall asleep. That sudden body

jerk? It’s not random. Your brain sees your muscles relax too fast

and panics. It thinks you’re about to fall from a height and fires an emergency

signal through your nerves. That shock snaps your body awake to save your life.

This reflex is thousands of years old— from when falling asleep meant falling from trees.

And your brain still hasn’t turned it off. That’s why it happens again…

tonight.