Eli5 why grown ups do not fall down from the bed?

Question

I am wondering why small kids ( even a few years old) fall down from the bed while changing their position but bigger children /adults do not, no matter how much they move while sleeping?

In: 2276

Answer 1

It can depend on the bed big time. As an adult, I used to fall off the twin beds that my parents had for guests. Eventually dad changed it out for 1 queen size and I stopped rolling out of bed there