The crunch is a classic ab exercise. It’s also pretty straightforward: Lie on your back with your knees bent and feet flat on the floor, contract your abdominals, and lift your shoulders, neck, and ...

Hold a 5-pound medicine ball (or dumbbell ... and bring your arms overhead. Do 15 reps. Crunches, teasers, planks, and body-weight squats are some of the best exercises for stronger abs.

The dumbbell weight should be challenging but not ... Using your core—not your arms—hinge at the hips and crunch down to slam the ball to the ground, as you lower into a squat position.

Inhale and allow the weight to fall between your ... Aim the medicine ball toward your ankles as you perform this double crunch. Inhale, and lower pelvis and upper back an inch toward the floor ...

If you need proof of concept, just look at the guy. You might take you a week or two to get into the habit of knocking out ...