"sit and be fit" is a creation of mary ann wilson, registered nurse, teacher and recognized leader in the field of fitness and healthy aging. mary ann consults with a team of medical and exercise specialists to bring you a fun and effective way to maintain functional fitness. >> mary ann: the exercise program you're about to do is effective for any age, but it was specially designed for anyone needing slow, gentle movement. all you need is a chair that touches your back while your feet are flat on the floor. if your back doesn't touch, put a pillow behind for that necessary back support. if you have your exercise band and towel, put them on the back of your chair. now, get ready to... "sit and be fit." >> hi. i'm mary ann wilson. i'm so glad you're here today. now, if you do have that ball handy, put it right behind your back to begin with and settle in. get it right in the small of your back. okay. does that feel good? now check your posture, up, back, chin back. okay. i think we are ready to go. get ready to take a deep breath in. all right. here we go. breathe in. now, as you breat