I just did it and I think I almost squashed my heart. I didn’t really need to know what that feels like.

I’ve tried this. Definitely don’t recommend putting a huge nail in your chest though. It’ll be a nail in your coffin for you.

Actually I was born with collapsed lungs, but I was still alive for like 2-3 minutes.

TIL trees and plants have lungs

As someone who breathes I can confirm.