The AB-DOer Pro 2005 is easy to use and most of all it's effective! So stop waisting time with sit-ups and start working on that waistline with your own For many of us getting on the floor to do sit-ups or crunches is a task in itself. It can also be one of the greatest deterrents to achieving the fabulous-looking waistline that you've always wanted. With the AB-DOer Pro 2005 you can achieve your dream waistline in just minutes a day. John Abdo; a physical fitness expert; saw the need for an abdominal exercise machine that simultaneously provides an effective aerobic workout, so he invented the AB-DOer Pro 2005.