The video you see below is the definition of extreme sports. Taking a bicycle and going down 80 degree drop-offs, expecting to have those two wheels get you over jagged rocks and gargantuan jumps. The event is called Red Bull Rampage, and it's some of the most intense downhill mountain biking you'll ever see. Red Bull compiled some of the craziest crashes and put them all into this tidy two-minute package. Enjoy (and wince) below. 

[via Red Bull via YouTube]