Parkour is the coolest training trend in the world right now. Inspired from military training routines, it involves jumping, swinging and vaulting over obstacles like buildings, ledges, railings, and whatever one can find. Once you become an expert, you are basically a superhero. You must have seen a lot many amazing parkour videos where guys are jumping over buildings, hanging from ledges like it’s cakewalk.

But it’s anything but easy. The activity is tough as hell and involves a lot of falls and broken bones. Don’t believe us? Watch these super painful parkour fails that prove you need to practice your ass off before you actually jump from buildings.

If you’ve managed to make it through the first one, here’s some more bone-cracking fails.

Now we know why women live longer than men.

Warning: Do not try any of these at home or outdoors.