Everyone experienced this before

Doesn't that have to do with your heart rate dropping because you're falling asleep and your body flipping out because it thinks you're dying

When bae pushes you off the bed in their sleep.

Anatomically speaking this happens because your conscious brain still has partial control of your body. When you sleep your brain basically turns off your conscious ability to move to keep you from acting out everything you do in your dreams. The jerk happens when the control is only partially retarded and your body can still move according to your demands. It really is a neat biological feature and doesn't take much googling to find out more.

I don't get this anymore but it used to happen all the time, the whole room would spin too

Who s the lucky 30 here?

no they all don't. it says 70% u silly goose