Muscle Group: Abdominals

Leg Raises work the lower abdominal area and the hip flexors. This is an old school exercise, but it still gets really good results.

Lie on your back on a flat bench, your glutes just at the end of the bench, put your hands under your glutes for support, and extend your legs out straight.

Keeping your legs straight; lift them as high as you can, hold for a moment, then lower them until they are just below the level of the bench.