I was at work recently and someone asked me to help him move a table. Jumping to the task before thinking, I realized in the middle of the task that I probably shouldn't be there. But, how was I going to get out of finishing the job? Obviously, I wasn't. And when we had finished moving the table and I straightened back up, I realized how good I felt. Usually, if I do engage in activities of this sort, my back will be sore and I'll know that I overdid it.
I attribute my added strength to my new stomach muscles. The bender ball materials and my own research explained that I should feel stronger and more fit with better stomach muscles. And I'm living proof that it really is true and that even 10 minutes a day can really make a difference! Amazing!