HOW: Begin in a kneeling position. Grab onto an ab wheel and start to roll towards one side with your elbows almost locked out. Return to the starting position and repeat going straight forward, and then to the other side. Try to think of being in a good plank position with a straight spine as you roll out until you the wheel is straight overhead.
FEEL: You should feel your core muscles working the most. You will also feel your shoulder and chest muscles working to pull the wheel back in.
COMPENSATION: Keep your back flat as you roll out and back in.