Credit: Lisa Romerein

Lisa RomereinCross-Torso Repeater A
for abs, shoulders, upper back, quads, and butt

Standing with your feet hip-width apart and a 5- to 8-pound dumbbell in each hand, shift your weight to your right leg, then touch your left toes to the floor and slide them out to the side. Extend both arms overhead and to the right, making a diagonal line from your fingers to your left toes.

Trainer tip: Keep your standing leg slightly bent.