Popsugar Health & Fitness Crossfit Best CrossFit Ab Exercises These Are the 17 Best CrossFit Ab Exercises If You Want to Lean Out and Carve Your Core 5 August 2019 by Jenny Sugar View On One Page Photo 5 of 17 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Burpee Lower into a crouching squat with your hands on the floor. Do a squat thrust by jumping your feet back into a plank position. Do one basic push-up, bending your elbows and then straightening back to a plank. Jump your feet forward to your hands, and come into a squat. Do an explosive jump straight up, getting as much height as you can. This counts as one rep. Previous Next Start Slideshow CrossFitWorkouts