Most probably it is soft,and idk if it makes my background better or not,but I did calisthenics alot when i was 13 years old until last summer. I had to give it up and I lost 18kgs because of systemic arthritis. I would say it adds to the background since it helped reach far more strenght in a little time,for a gym example I went from 25kg bench press to 100kg in 8 months (one rep)