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 ...

But crunches target just one of those muscle groups ... Sit down with your knees bent and feet flat on the ground. Lean back slightly, engaging the core and keeping the back straight. Hold your arms ...

A well-rounded ab workout will strengthen your core, tone your midsection and help prevent and reduce back pain.

Stand tall with your hands behind your head. Bring your left knee up to meet your right elbow in a standing crunch. Hold the position and pulse the knee and elbow together for three mini-reps. Return ...

lift them into the air and crunch up as usual – keeping the back firmly on the ground. Again, lie on your back with knees bent and feet flat on the floor. Roll your knees to one side down on the ...

Lay on a flat surface with your legs out ... sit-up but with a smaller range of motion. During a crunch, only your shoulders come off the ground, and your lower back stays down.

Place the forearms on the ground with the elbows aligned below the shoulders, and arms parallel to the body at about shoulder-width distance. If flat palms bother your wrists, clasp your hands ...

But crunches target just one of those muscle ... Sit down with your knees bent and feet flat on the ground. Lean back slightly, engaging the core and keeping the back straight.