- Sit in a chair with a backrest with a straight back.
- Place the band below your knees and grasp both ends, one in each hand.
- Keep your left hand immobile on your thigh and stretch your right arm as high as you can and hold for 5 seconds, without taking your back off the backrest.
- Slowly return to the starting position and repeat up to 15 times.
- Change arms and start the exercise again.
