With this one I go back to a less specific kind of exrcises but still quite important. This possition that I improved over the months and according to my physical stamina I got it from a friend who at that time was doing yoga and I questioned her about some exercieses for the lumber area; she told me about one in which you are sitting (very good for me with the legs open and extended before your body and try (this is very importatnt just try otherwise you may break your spine) to put your head between your knees (I found this one also very good for flattering my stomach that as a result of being a full time wheelchair user the fat from my bottom and tights went to my stomach)