Check out Women's Health's Fitness Faceoff every week to learn which moves will best help you reach your fit goals. Here's this week's faceoff: Don’t give all the attention to your abs and booty.

Using a pair of five- or eight-pound dumbbells, stand with your feet hip-width apart. Press the dumbbells over your head so that your arms are both straight (A). Then, step laterally to your left and ...