Stand upright, arms hanging with the dumbbells in your hands (neutral grip), the backs of your hands pointing to the respective side (away from your body), bend/bend your arms alternately (bring the dumbbell to your shoulder, back of your hands still pointing to the corresponding side). The movement is performed using only the arm without supporting the upper body (leaning backwards). Lower the dumbbell back to the starting position by extending the arm before starting the exercise with the other arm.
Attention:
Keep a straight back, do not lean backwards (if necessary, perform the exercise with your back against a wall to maintain the position), keep your elbows slightly in front of your body, work without momentum.
Lighten:
Less weight.
Harden:
More weight.
Variation:
Lift arms parallel to shoulders (simultaneously).