4. HAMSTRING CURL AND SHOULDER PRESS
Hold a weight in each hand at shoulder-height. With one jump, kick one heel up behind you, simultaneously straightening your arms up above your head (A). With another jump, lower your foot and your arms (B). Jump again, this time kicking your other heel up behind you, straightening your arms above your head once more. Return your heel to the rebounder mat. That’s one rep. Do as many as you can.