Stand with your feet together, lowering your body slightly in a shallow squat. Jump as much as you can toward your right side, landing on your right foot. Allow your left foot to tap the floor for balance. Immediately leap toward the left side. Keep your body low and your knees soft. Repeat for a total of 30 jumps, 15 per leg.
3. Sprint Intervals
Walk for 5 minutes to warm up (you can do so on a treadmill or outside). Then run as fast as you can for 2 minutes, and return to walking for 2 minutes. Repeat 8 times.