Popsugar Health & Fitness Full-Body Exercises Indoor Cardio Exercises When It's Raining or Too Hot to Run Outside, I Do These 23 Indoor Cardio Exercises 22 June 2020 by Jenny Sugar View On One Page Photo 21 of 23 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 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. Previous Next Start Slideshow Full-Body ExercisesCardioWorkouts