Stand with your feet slightly wider than hip-width apart holding a dumbbell in one hand.
With your knees slightly bent lean your body forward from the hips, keeping your back and neck long and your gaze directly down.
Hold onto a stable surface for balance with your other hand if needed.
Start with your arm hanging downwards.
Keep your body still and when ready lift your arm out to the side, with your elbow soft.
Control the movement as you lower your arm back down and repeat.