Stand upright and grab a pair of dumbbells with your arms extended at your sides (Palms facing in).
2. Flex your shoulders to raise your arms to shoulder height. Hold the contraction for a moment and slowly descend your arms.
3. Flex your shoulders once again to raise your arms to shoulder height, but this time at a 45 degrees angle. Hold the contraction for a moment and slowly descend your arms again.
4. Flex your shoulders for the third time but this time raise your arms laterally. Hold the contraction for a moment and slowly return to the starting position.
P.S: All the 3 steps count as 1 rep.