FitBALL Mini - 9in - Blue

I ordered Fitball after doing Physical Therapy with it at the physical therapy office. I am undergoing PT for strengthening muscles after back surgery. This 9" ball has a great non-slip texture, it is some what coarse not just smooth plastic like the big exercise ball. It is pleasant to touch and stays where you put it very well. My favorite exercise with it so far is double ball abdominal lift/crunch. * Laying on my back and tighten your abdominal muscles and I squeeze the 9" inch ball with my knees, while holding the larger exercise balls with my feet. * Then I raise the ball off the floor. To protect my lower back, I pull my bellybutton in toward my spine. * Then I squeeze the ball between my knees for one deep breath. * Return I return to the start position and repeat. This exercise really gives a good burn! In addition to the exercises I get at the PT office, I found additional information by googling for 'fit ball' exercises. The ones with video are almost as good as going to the physical therapy office as you see the correct way to do the exercises. For example, Mayo clinic has a nice set.