If you're thinking of giving martial arts a try, this video will make you think again. Uless you've got natural skill and talent for it, you're in for quite a learning curve as it's clearly harder than it looks. Not everyone is born stealth and limber like Bruce Lee, as you can see in this compilation clips of painful martial arts fails.
They punch, they kick, they jump...and then they lose their balance and fall flat on their faces. I'm pretty sure most of the dudes who took a beating needed painkillers afterwards, because some of the spills just looked plain nasty. Check it out!