Make sure you're doing your burpee correctly. Stand with your feet shoulder-width apart, weight in your heels, and your arms at your sides. Push your hips back, bend your knees, and lower your body into a squat. Place your hands on the floor directly in front of, and just inside, your feet. Shift your weight onto them. Jump your feet back to softly land on the balls of your feet in a plank position. Jump your feet back so that they land just outside of your hands, and then jump back in the air. Land and immediately lower back into a squat for your next rep.