Stand with your feet shoulder width apart, holding a dumbbell in each hand. Squat down and place your hands on the floor in front of your feet, maintaining grip on the dumbbells throughout. Lean forward, so your weight is on your hands, at the same time jumping your legs out behind you until they are fully extended. Your body should form a straight line with your arms fully extended in a high plank position. Lower down from this position until your chest and body touch the floor. Push through your arms to return to the high plank position. Then jump your feet forward and to either side of your hands. Simultaneously swing both dumbbells from between your legs up and overhead, extending your knees and hips as you so until you are standing tall. Commence the sequence from the beginning again and repeat for the required number of reps (or time).