Stand with your feet slightly wider than shoulder-width apart. Hold your dumbbell in front of your chest with your elbows pointing down. Push your hips back and squat down until the tops of your thighs are parallel with the floor (or as low as you can comfortably go). As you lower, imagine that you’re screwing your feet into the floor by actively pressing your ankles, lower legs and thighs outward. Pause, and push yourself back up to the starting position.