FITNESS: The Original Programs on DVD Lose up to 15 pounds in 21 days with two hit programs proven to get results—21 Day Fix and 21 Day Fix EXTREME. These workouts are short so you can get in, get out, and get on with your day. 21 Day Fix and 21 Day Fix EXTREME challenge you at every level to help maximize fat-burning results—but always with a modifier option for every move, so you set the pace without losing the benefits of a total-body burn.