This is a good exercise for the upper arm muscles.
Start in a split stance, feet about hip width apart. Keep your back straight and your abdominals engaged. Ensure that you have a good grip on the dumbbell at all times. Raise your arm so that your elbow is pointing upwards. Your upper arm should stay in this position throughout the exercise. Bend your elbow so that the weight is basically behind your head.
Keeping the upper arm in place, straighten your elbow, pushing the weight up toward the ceiling. Repeat 10 - 12 times, then switch hands. Repeat the entire sequence as desired.
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