MUSCLES ENGAGED Glutes Gluteal Muscles (Glutes) are one of the strongest muscles in the body and are the connecting point between your legs and back muscles. Glutes are used in a variety of actions from moving the leg to extending and rotating the hip, as well as extending and rotating the trunk of the body. Hamstrings The hamstrings play a crucial role in many daily activities, such as, running, jumping, walking and cycling. Strengthening your hamstring muscles help to protect your knees from injury by absorbing the stress placed on the knee. Weak hamstrings can lead to knee injury. Equipment Used Plyometric Box Plyometric Boxes increase athletic ability concerning quick movements and explosiveness. They come in a variety of different heights (12"-48") and are usually made of metal or wood. Exercise Instructions Step 1 Start by placing one foot on top of the box making sure the entire foot is making contact with the surface. Step 2 Pull your body up through the heel of the foot that is up on the box. Step 3 Lower your yourself back down to the floor with full control.