WEIGHTED BENCH CRUNCH
Lie faceup on a bench so your head and shoulders hang off one end.
Keep your knees bent and feet flat on the bench, and hold either a medicine ball or a weight plate at your chest. Curl up until your shoulders are about 6 inches above the bench. Pause, then lower until your shoulders come just below the level of the bench.
Lie faceup with your knees bent, feet flat on the floor and arms extended overhead with your hands together. Keeping your arms straight and alongside your head, curl up to raise your shoulders off the floor. Pause, then lower back to the start.
ELEVATED BALL CRUNCH
Lie faceup with your knees bent and feet flat on the floor. Grasp a medicine ball with both hands and extend your arms to raise it over your chest. Curl up until your shoulders and upper back come off the floor. Pause, then lower back to the start. Repeat for reps.
