Upside down sleeping

I recently picked up a red bouncy ball (sort of the kind that you would use in dodgeball) for H and she was playing with it today but in an odd way. She kept rolling her body on it sort of like on an exercise ball. We couldn't figure out what she was trying to do. A stability ball push up? But she was sure working herself really hard from all her sounds of panting and exertion. We watched in bafflement and the next thing we know, she stopped moving around so much and we heard snoring. She had completely passed out. Huh. That was bizarre.

Rolling on the ball

Passed out asleep