Muffin Top is an obliques workout with exactly two ingredients and no patience for variety. Climbers and knee-to-elbow crunches alternate in blocks of ten, five times each - one hundred reps per set aimed squarely at the muscles that wrap around your waist.
The pairing works because both exercises attack the same region from opposite orientations. Climbers work the obliques as stabilizers: in a plank, every knee drive tries to twist and tilt your pelvis, and the muscles around your waist fire continuously to prevent it. Then you flip over, and the knee-to-elbow crunches make the same muscles the movers instead - actively rotating shoulder toward hip through a full contraction. Stabilize, then rotate, then back again, ten reps at a time. The constant switching between plank and floor also keeps your heart rate honest, adding a quiet cardio effect to what looks on paper like a pure ab session.
Keep your hips low and level through the climbers - the obliques only do their stabilizing job if your pelvis stays quiet while the legs drive. On the crunches, rotate your shoulder toward the opposite knee rather than yanking your elbow across, and keep the motion slow enough that momentum never takes over. Down, up, down, up - the transitions are part of the work, so keep them brisk.
Two exercises, one hundred reps, zero places for your waistline to hide.
Make it Harder: Speed up the climbers while keeping every crunch slow and full.
Make it Easier: Cut the sequence to three rounds of each exercise per set.
