Burn fat and calories in 20 minutes with trainer Bob Harper's sweat-dripping circuit workout.
Targets shoulders, arms, obliques, legs
- Stand with feet hip-width apart, arms over head, holding ends of a single dumbbell in each hand.
- Lunge forward with left leg, bending both knees 90 degrees as you rotate torso to right and lower dumbbell by right knee.
- Return to start, then repeat. Switch sides for the next circuit.
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