Lie sideways on a 45 degree incline bench and grab a single dumbbell with your arm extended at your side (Palm facing in).
2. Flex your left shoulder and raise your left arm laterally for 90 degrees.
3. Hold the contraction for a moment and slowly lower your arm back to the starting position.
4. Perform the movement for the required number of reps and once finished, repeat the steps with your right arm.