Beachbody The Fix Challenge: Introductory Workout DVD to 21 Day Fix Extreme - 1 Workout The Fix Challenge is a GREAT INTRODUCTION workout that features a variety of high-intensity moves that keep you on your toes, and keep the calories burning! This introductory workout will give the base fitness you need to be able to do the full 21 Day Fix Extreme Workout (sold separately) two rounds of extreme calorie-scorching moves fast and vigorous bodyweight workout is your 30-minute solution for a better body