1. Stand with your abs drawn in. Hold one dumbbell in each of your hands.
2. Bend one arm to 90 degrees, keeping it close to your side.
3. Perform bicep curls with the other arm.
4. After four concentrated reps, switch sides.
5. Bend the opposite arm to 90 degrees, keeping it close to your side.
6. Perform bicep curls with the other arm.
We love these adjustable dumbbells from Rep Fitness. They take up very little space and are also very durable compared to other adjustable dumbbells on the market.
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