I sit on a large ball (19€ at decathlon in France). It is great because I keep bouncing, rolling my hips, pushing my lower back forwrds. Sometimes I lay with m

I sit on a large ball (19€ at decathlon in France). It is great because I keep bouncing, rolling my hips, pushing my lower back forwrds. Sometimes I lay with my shoulders on the ball which helps to relax as well.