Hi, Mom! Are you in space? Almeda said that in space your head gets big and your legs get skinny.
We have constant thrust. It's a bit like gravity. It helps the body fluids stay where they're supposed to.
If you didn't have gravity, you could make giant spit bubbles.
Sweetie, when it comes to things that can float inside a spaceship, most people don't appreciate giant spit bubbles.