Circuit 1, Exercise 2: Caterpillar Thruster Stand with your feet shoulder-width distance apart. Fold forward, bending slightly at the knees, and place your hands on the floor directly in front of your feet, trying not to round the spine. Without moving your feet, walk your hands out until your body is in a high-plank position. Jump both feet forward toward your hands, coming into a low-squat position. Jump both feet back behind you, coming back to the high plank position, and walk your hands back toward your feet. Stand up to complete the rep. Complete as many reps as you can in 30 seconds. Image Source: Priscilla Frederick-Loomis