Jackhammer

Step 1: First try the spinning motion. Get in the handglide position and by
using only you're left hand (which is in your stomach) try to turn a little
bit. Sort of turn you're hand from you're wrist so you are clearly turning.
Do this back and forth. After that you should try hopping.

Step 2: So once again you are in the handglide position. Now by using you're legs and you're free hand for help try to jumping in this position. This move is
called The Cricket.

Step 3: Once you've got that down cold then try jackhammers. Now you put you're free hand behind you're back or something. You don't use it for any kind off help. So you're one hand does everything; hopping, balancing and turning. You're legs shouldn't touch the ground at all.

It's possible to screw up you're knees while doing this one because they are
GOING to hit the ground when you practice this.

This move is not easy, and not for beginners. You can hurt you wrist pretty seriously if you can't hold the handglide position. You should pretty
much master the position!