Move: Stand tall with abs contracted. Hold dumbbells, one in each hand, arms at sides, palms facing behind you. Keep shoulders down, and press arms behind your back; tighten the back of arms (triceps).
Next, slowly lift elbows to bring dumbbells just above butt level. As you lift, squeeze elbows toward each other (imagine holding a basketball between your arms without letting it fall). Lower arms, and return to start position.
Repeat: 2 sets of 10 to 15 reps