Free Online HD on Lookmovie. Spend a half-hour with fitness enthusiasts Tom Brokaw, Senator Ted Kennedy and others who will encourage, cajole, and even challenge you to get up and do something - anything! Featuring a common sense approach and solid medical advice from aerobics expert Dr. Kenneth Cooper, OFF YOUR DUFF successfully convinces viewers young and old that you don’t have to be a super-athlete to start getting in shape.