Seated Box Jumps are a great explosive exercise that ignites the nervous system for strength gains. To begin: 1. Set up your box and seat a few feet apart from each other. 2. Sit down on the seat facing the box that you’re about to jump up on. 3. Plant your feet firmly into the ground, with your hands by your side, then raise them above your head, and back down, and as you explosively extend from the hips and jump up and forward, swing them back up. 4. Land on the box with two feet and cushion t