STARTING POSITION:
Select the appropriate weight of the dumbbell. Step forward with your left leg and grab the dumbbell with your right hand. Maintaining the natural arch of your back, lean forward until your torso is parallel to the floor. You can bend the knees slightly. Contract your pelvic floor and core while keeping your chest facing the floor.
MOVEMENT:
Retracting the shoulder blade, pull the dumbbell up to the side of your chest while you exhale. While your are doing the exercise, move only the arm, make sure you don't move any other part of your body. Return to the starting position in a smooth movement while you inhale. Repeat the movement for the specified amount of repetitions and then switch sides and repeat with the other arm.
TIPS: The exercise key is quality over quantity. The trick is to perform the exercise using proper form. Make sure you do all the repetitions in all the range of motion of the exercise.