Urban Jungle 3 Week Calorie Busters and Base Builders are designed to be a 3 week concentration on either strength building or cardiovascular training.  These are our BURN Challenge broken apart. Our BURN EXPRESS combines the BASE BUILDER and CALORIE BUSTER together into a condensed version. If you have a time constraint and can only handle 3 weeks at a stretch, or you are a graduated BURNER and want to maintain your current fitness levels...THESE are the programs for you.  These 3 weeks will BURN so good!  Just as is true for our 6 week Challenges, you will not do the same workout twice no matter which 3 week Challenge you choose.