VIDEO: Parkour jumper crashes through roof - FOX 35 News Orlando

Perhaps you've seen videos of acrobatic young people, bouncing off walls and leaping over large obstacles at great heights?

There's actually a name for the running, jumping, vaulting, climbing and balancing acts.  It's called Parkour, and with proper training, some feats that seem impossible can be achieved with agility and grace. 

But things can go terribly wrong, as seen in this viral video shot at the Egyptian holiday resort of Sharm El Sheik.