Most humans over age 10 know that wrestling isn't "real", but it definitely requires athletic ability and poses some serious risk to the body.

Tragically, Mexican star Perro Aguayo Jr. was killed Friday in a match with Rey Mysterio. In the video below, you can see Aguayo seemingly lifeless on the ropes, yet the match continues. Aguayo was officially pronounced dead at a Tijuana hospital just hours after the match. Apparently the ropes snapped his neck, causing cervical spine trauma.