Why do we sometimes jolt as we're falling asleep?

Have you ever started to fall asleep and then suddenly – whoa! – you jolt awake? What’s up with that? We asked sleep specialist Chris Winter to help us find the answer.

Have you ever started to fall asleep and then suddenly – whoa! – you jolt awake? What’s up with that? We asked sleep specialist Chris Winter to help us find the answer.
Got a question that has you losing sleep? Send it to us at BrainsOn.org/contact, and we’ll pull an all-nighter to find the answer!

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Why do we jolt as we fall asleep?

Smash Boom Best is a debate show for kids and families from the makers of the award-winning podcast, Brains On! Every episode takes two cool things, smashes them together and lets you decide which is best.


Smash Boom Best

A history show for the whole family! Every episode explores the origin of just one thing — like sandwiches, video games, clocks and more — while teaching listeners to think critically about history.


Forever Ago

Our mission is to encourage kids’ and curious adults’ natural curiosity and wonder using science and history…but there’s no age limit on curiosity, and episodes of Brains On can be enjoyed by anyone.


Why do we jolt as we fall asleep?

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