Dr Allison?

Matthew fell (stubbed his toe), and I found him laying on the floor on his tummy. He couldn't move (he thought). He also thought he banged his rib when he went down.

Allison: Oh no! He hurt his rib! That means his heart stopped beating! I need to check for his heart.
Matthew: You can't. I'm lying on my tummy.
Allison: Oh no! How can I tell if his heart is beating?
Mommy: Check his pulse. (Shows her how to check his wrist)
Allison: Good! I can feel the blood moving.