21 Day Fixs Extreme 4 DVD Workout Full Program Set, Fix Challenge Introduction Workout, Elastic Band and Nutrition Plan, See how easy portion control, clean eating and extreme 30-minute workouts help you get the hard body thats always desired. Extreme Fitness Easy Eating. Serious results. If you absolutely need to get slim and defined in no time, 21 Day Fixs Extreme is the way to go. Give him all the guts, intensity and faithful to yourself and you will always want the hardbody. The workouts are short, but the extreme. The meal plan is simple, but there is no room for treats or cheating.