Stand with your feet shoulder-width apart and your chest tall.
Hold your hands at chest level, and bend your knees to push your butt back into a squat like you're sitting on a chair.
Keep your chest lifted, and do not let your lower back round.
Press your weight into your heels and engage your core as you come up out of your squat a few inches and lower back down. This is your pulse.
Jump up explosively, swinging your arms backward as you do.
When you land, lower your body back into the squat position to complete one rep. Make sure you land with your entire foot on the ground and with control.
Do 15 reps, and rest for the remainder of the minute.