Targets: Biceps, glutes, abs, quads
- Sit on ball with back straight, abs engaged, feet on floor and a dumbbell in each hand, elbows bent, palms in.
- Keeping upper body still and right knee bent, lift right foot 6 inches while swinging left arm forward and right arm back (as if running).
- Return to start. Switch sides; repeat. Do 20 reps, alternating sides.