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When It's Raining or Too Hot to Run Outside, I Do These 23 Indoor Cardio Exercises
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21

Cross Jack

  • Stand with your feet shoulder width apart and extend your arms straight out to either side, with your palms facing down.
  • Jump and cross your right arm over your left arm and your right foot over your left foot.
  • Jump your legs to the sides and open your arms, then cross with the opposite arm and foot to complete on rep.
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