Fitmix.net is a free interactive online fitness program. This is the first video in the first workout series. This workout features exercise groups knee centric leg, full body, biceps, and cardio movements. Fitmix generates unique workouts for is users. The combinations of exercise groups is always changing. In test we've seen no duplicate workouts in a 60 year period of 4 day a week workouts and 6 exercises per workout.