Power Shed is a fast moving strength and tone workout that also pushes VO2 Max, which means endurance. Each exercise is time-based which means you really need to get the rep count up for each exercise and then aim to keep it there or improve it throughout each set. Get your knees up at High Knees and make sure you're landing on the balls of your feet as you touch down. Plant your feet firmly during punches, left foot forward and then really twist your upper trunk to get body weight behind each punch and snap the punch back fast to get the rep count up. Transition as quickly as you can between exercises, give yourself zero downtime. And add EC. It will make you feel the burn!