This is the move used to transition between the others, say from Beast to Crab — and back again. Mastering the Under-Switch will make your flow smooth. Get into the start position for the Crab Reach. Lift your left hand and right foot off the floor, then raise your left heel and press the ball of your foot into the ground (imagine stepping on a gas pedal). Pivot on the ball of your left foot and rotate your right leg underneath your body so you’re in Beast. Reverse the move to get back to Crab. Practice this on both sides until you can transition smoothly.