Engage your core to push upward explosively from your heels.
How-to: Stand with feet slightly wider than shoulder width. Extend arms straight with palms facing down. Inhale and push hips back slightly as you bend your knees. Look straight ahead and keep chin up, shoulders upright, and back straight. Squat as low as you comfortably can, aiming to have your hips sink below your knees. Engage your core to push upward explosively from your heels.