Omg I did have one when I was a child. Spent whole family trips watching him parkouring a full speed beside our car.
You are saying more people did this?
It's more weird/disorienting than awful. If you've ever been walking, tripped, and then caught yourself before you fell, it's like that. The difference is you're in bed, so you're half asleep, and you can't fall because you're already lying down.
I see, thanks for the explainer. Guessing based on the comments it must be somewhat common for this sensation to happen to people at least once in their life. The only time I had an odd sensation in bed is when I actually fell out of my bed, it was very disorienting but the difference is I actually fell out of my bed.
It's such a weird feeling. I can't sleep on my back so whenever I would forcefully try myself to sleep in that position that would happen to me. It's always happen when I'm just about to fall asleep.
It's never been super bad experience for me, more annoying because, well I'd like to sleep lol. For me it's basically the same feeling when you're sitting and nod off and catch yourself before you tip over/fall. Usually accompanied by a sharp inhale and an "oh shit!... oh anyways, sleep".
It's your brain being confused. It hasn't gone to sleep yet but your muscles have. So the brain is like: yo leg, you dead? And fucking jolts it. Then he's like "woah no need to freak out. kk we good, we're going to sleep btw". And then you sleep.
I got gout in my toe once, every time I did that jerk right before sleep I involuntarily flexed my toe and the lightning shot of pain woke me right back up again. It was the most miserable 48 hours of my existence.