by POPSUGAR Fitness 11

If you're looking for a way to get your heart rate up without going for a run or hopping on a cardio machine, give this jumping-jack variation a try. This move will also work your core and upper body.

To learn how to do this exercise, read more.

• Begin in plank position (top of a push-up), with your shoulders over your wrists and your body in one straight line. Step your feet together.
• Keep your upper body stable and engage your abs. Now begin doing jumping jacks with your legs. Hop them wide, then hop them together. Jump as quickly as you want.
• Do a total of 30 jumping jacks, which counts as one set. Then complete two more sets.