Start by standing or sitting with a dumbbell in your hand facing the ceiling
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As you inhale lower the dumbbell behind the head to the neck. Hold in this position for the count of 1.
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As you exhale raise the dumbbells up to the starting position. Repeat
3 sets 10 to 12 reps. Rest 30 to 40 seconds between reps
When you finished with one arm. Repeat the same process with the other hand.