Why Do You Fall While Sleeping? The 2 Million Year Old Answer
Every night, just before you fall asleep, your body slams you back awake with a violent jolt. You weren't falling. You were lying completely still. But your brain didn't care. This is called the hypnic jerk — and the reason it happens reaches back 2 million years, to a time when your ancestors slept in trees. In this video, we break down the neuroscience behind why your body does this, what William Frey's research revealed about your nervous system, and why your ancient brain still thinks it might be in a tree. ───────────────────────── 📌 CHAPTERS 0:00 - The Jolt 0:55 - What Is a Hypnic Jerk? 1:15 - Your Nervous System Shutting Down 2:11 - The Evolutionary Theory 2:36 - Why Your Ancestors Slept in Trees 3:18 - Natural Selection Built a Tripwire 3:45 - Professor Jason Ellis 4:23 - Your Brain Is Hallucinating 4:51 - The Second Theory 6:38 - What Makes It Worse? 7:21 - The Poetic Truth ───────────────────────── If this made you think, subscribe for more videos like this every week. #hypnicjerk #sleep #psychology #neuroscience #sciencefacts #brainscience #didyouknow #sleepscience #evolution #educationalvideo
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