Popsugar Fitness Crossfit 15-Minute CrossFit Jump-Rope Arms and Legs Workout This 15-Minute CrossFit Workout Destroyed My Arms and Legs – In The Best Possible Way 21 July, 2020 by Jenny Sugar View On One Page Photo 2 of 3 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Jump Rope Grab a regular or heavyweight jump rope and do 50 jumps (called single-unders) or 30 double-unders. Previous Next Start Slideshow CrossFit15-Minute WorkoutsIntermediate WorkoutsWorkouts