Place the cushion on your chair in such a way that the valve
is on the side (i.e. on the right or the left near your thigh).
Your legs are parallel and slightly opened and your hands
are stretched to the side. Move your pelvis forwards and backwards like in exercise BASIC FRONT. Pull up your knees when you move back and stretch your legs when you move forwards. Then stop in the middle for 5 seconds.
Repeat this exercise 10 times.
