Frog Crunch Hold

Bent-Knee Crunch Against Wall

Overhead Sit-Up with Legs on Bench

Seated Frog Half-to-Full Sit-Up

Dumbbell Overhead Sit-Up with Legs on Bench

Bottle Weighted Overhead Crunch

Lying Crunch (Straight Legs)

Cable Kneeling Crunch

Wide-Leg Sit-Up

Plank Pike Slide with Towel