Abhinabha Tangerman from the Netherlands has set the Guinness World Record for the most one-handed claps.  How did this cat not cramp up?!  I tired this and I still can't move my hand without pain 5 minutes later.  The guy is legit!  Go ahead and try this for the whole time he is, don't stop, push yourself through!  Now, write in the comments below how your hand feels.