Your body is a complex machine made of countless muscles, nerves, vessels, and whatnot all interacting with each other. Even though you don’t get to see a good majority of what goes on in your body, rest assured, it’s way more complicated than you think.

And with such complexity, surely there are ways to make use of it, right? Well, you’d be correct. Here are 48 of the most fascinating tricks that you didn’t know you could do with your body.