The Pyramid exercise works your shoulders, chest, arms, abs, butt and legs.
In plank position, walk your right hand and your right foot out one step towards the right. And follow with your left hand and foot. As you quickly jump your feet forward, stand up into a deep squat and jump your feet back and do the plank walk again. Each time, build on to how many squat repeats you do in between the plank walks. Continue the sequence for one minute. Do two sets total.