Stand upright, arms hanging with the dumbbells in your hands (underhand grip), the backs of your hands pointing backwards (towards your body), bend your arms simultaneously/parallel (bring the dumbbells towards your chest, backs of your hands pointing away from your body). The movement is performed using only the arms without supporting the upper body (lean backwards). Lower the weights back to the starting position by stretching your arms.
Attention:
Keep your back straight, 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 and work without momentum.
Lighten:
Less weight.
Harden:
More weight.
Variant:
Lift your arms alternately to your chest.