Stand upright, shoulder-width apart, facing the wall bars (or a tree, for example), attach the elastic band to the wall bars (on the tree) at chest height, stretch your arms in front of your body at chest height, bend your knees to approximately a right angle at the knee joints (squat; buttocks at about knee height) and stretch back to the starting position.
Attention:
This exercise is ideal for beginners as the band makes the movement (knee bend) easier.
Push your buttocks backwards, not your knees forwards. Keep your knees behind your toes. Keep your back straight at all times (tense your torso), distribute your weight over your entire foot, push your knees outwards (do not tilt them inwards). A pad for the heels makes the exercise easier.
Lighten:
Choose a rubber band with greater resistance.
Harden:
Choose a rubber band with less resistance.