Popsugar Fitness Workouts Indoor Cardio Exercises When It's Raining or Too Hot to Run Outside, I Do These 23 Indoor Cardio Exercises June 25, 2020 by Jenny Sugar View On One Page Photo 15 of 23 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Squat Jump Start in a squat with your arms by your sides. Swing your arms to the ceiling, and jump. Land quietly as you return to the squat position. This completes one rep. Previous Next Start Slideshow WorkoutsCardioFull-Body Exercises