- Begin standing with your feet hip-width apart.
- Step your right foot back into a reverse lunge, then drive the right knee forward, and step it back into the reverse lunge.
- Quickly jump in the air, switching legs so you are now in a reverse lunge with the left leg back. Complete a knee drive, then lunge the right foot back.
- Continue alternating sides for 45 seconds, followed by a 15-second rest.
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