Half kneeling with the upper body leaning slightly forwards, with the (right) foot placed on the floor, an elasticated rubber band is fixed in place. The outstretched left arm holds the free end of the elastic band on the side of the kneeling leg (left) at shin height of the lowered leg. From this position, bend the arm (stretch/tension the elastic band further) by bringing the hand towards the chest. Then stretch your arm back to the starting position.
Attention:
Always make sure your back is straight (keep your core tensed). The angle of the back and thighs remains unchanged throughout the exercise. Keep your elbows close to your body.
Lighten:
Choose a rubber band with less resistance.
Harden:
Choose a rubber band with greater resistance.
Variation:
Grab the band with both arms on the side of the kneeling leg (organisation = 1 exercise).