The human body is an assortment of incredibly complex systems - many of which we learn about in school.
But you probably didn't learn about the weird and wonderful facts in this video in your biology lessons.
For example, did you know that the heart can create enough pressure to spray blood 30 feet? Or that the stomach can produce enough hydrochloric acid to dissolve razor blades?
To find out how much sweat you can actually lose, why things taste different to you and your gran and loads of other crazy body facts, watch the video above.
It will blow your mind.