Tracy Anderson's Top Exercises for Flatter Abs and a Stronger Core: This seven-move series, created exclusively for Health readers by Tracy, is part of our Core Challenge: Transform Your Butt, Back & Abs. It promises to do wonders for your waistlin
Ever wonder how Jennifer Lopez stays in such amazing shape? Her personal trainer Tracy Anderson shared the challenging full-body workout that J.Lo swears by. It strengthens and tones you from head to toe, while giving a little extra love to the glutes.