Uppercuts Start in a split stance with your right foot one step ahead of your left foot, hips facing forward, arms at your sides. Using your right hand, punch upward and to the left in a scooping motion. Immediately, bring your left fist up and across your body as you lower your right hand. Repeat in a rapid, continuous motion for 30 seconds. Then, switch your stance and repeat for another 30 seconds. Rest for 1 minute in between sets. Power Skip Stand with your feet hip-distance apart and tighten your core. Lift your right knee up towards your chest and your swing your left arm across your body as you jump with your left foot. Land on the ball of your left foot and bring your right foot down. Repeat on the opposite side, concentrating on jumping as high as you can. Fast Shuffle Stand with your feet wider than your hips, core tight, knees slightly bent. Shuffle to the right for 4 steps, then shuffle to the left for 4. To make this exercise more challenging, you can bend your knees to squat lower as you shuffle. Continue for 30 seconds to a minute with 1 minute of rest between sets. Mountain Climbers Start on all fours with your hands directly beneath your shoulders, arms fully extended. Fully extend your legs and support your weight on your toes. Bring your left knee to your chest, then quickly switch legs, jumping your left leg back as you bring your right knee to your chest. Perform 30 second sets with 1 minute of rest in between. Jumping Rope Hold the handles of a jump rope in each of your hands behind your back at waist level. Stand on your toes with your feet together. Flare your wrists out to the side and swing the jump rope over your head. When the rope hits the floor in front of you, sweep it under your feet as your jump a few inches off the ground. Establish a rhythm and repeat these motions continuously. Perform 30 second sets, with 1 minute of rest in between. Inchworm Stand with your feet hip-width apart and your core braced, arms at your sides. Bend forward at the waist and place your hands on the floor about 18 inches in front of your feet. Keeping your legs straight walk your hands forward until your reach a plank position. Then, walk your hands back toward your feet and stand again. Repeat the exercise in a continuous motion for 30 seconds to a minute. Rest for 1 minute between sets. Burpees Stand with your feet hip-distance apart, arms at your sides. Bend your knees, swing your arms back and jump off the ground as high as possible. As soon as you land, squat down, place your hands on the floor in front of you, directly beneath your shoulders, and jump your feet back so that you land in a push-up position. Bend your elbows and lower your chest to perform a push-up. Jump both feet forward and stand. Repeat the moves for 30 second intervals, with a minute of rest in between. Plank Jacks Start on all fours with your hands directly beneath your shoulders, arms fully extended. Fully extend your legs behind you and support your weight on your toes. Jump your feet further than hip-distance apart, then jump them back together. Repeat for 30 seconds to a minute with 1 minute of rest between sets.