HIIT-ing it hard has never felt so good! This well-rounded routine will leave you feeling complete. You'll ease in with a quick warm-up, then dive into a sweaty HIIT session including burpees, squat jumps, and plank walk outs, often utilizing a set of weights. Next, cool down and speed your recovery time with some foam rolling, then end with a brief meditation to clear your head. Props Needed: A foam roller and a set of 2-5 lb weights.