Midsection Mauler

Fortify your abs, obliques, and deep core muscles with this high-rep, no-equipment core gauntlet. Rest 1 minute between exercises. Workout: -Straight Arm Crunches x 50 reps -Reverse Crunches x 50 reps -Cross-Body Mountain Climbers x 50 reps (25 each side) -Seated Knee Pull-ins x 50 reps -Plank Hold x 90 seconds