The human body is like a super intricate machine. There are so many weird and cool facts about it that you probably haven’t heard. We’ve picked out some of the most interesting ones and some of them will totally surprise you.

There are other facts that are just as cool. Like, did you know that blowing on your thumb can actually help you? And guess what, your heart can squirt blood pretty far across a room!

This list has all sorts of stuff that might make you realize there’s a bunch about yourself that you didn’t know before.

Human teeth are as strong as shark teeth

Even though shark teeth are composed of a tougher mineral than human teeth, they still possess similar strength. This is mainly attributed to the presence of enamel covering them, which is quite alike in both species.