Leg Raises
work the lower abdominal area and the hip flexors. This is an
old school exercise, but it still gets real good results.
Implementation: (A)
Lie on your back on a flat bench, your behind just at the end of the bench, put
your hands under your glutes for support, and extend your legs out straight. (B)
Keeping your legs straight; lift them as high as you can, hold for a moment,
then lower them until they are faintly below the level of the bench.