MARK LAUREN Workout DVD - Bodyweight 90-Day Challenge | Total Fitness Bodyweight Exercise Program

How long is each workout?

What program should i purchase? i'm a 60 year old 'skinny-fat' woman. i'm a size 4, but super flabby everywhere. 90 day or yayog?

Following the downloadable exercise plan for the 90 day challenge dvd set... do you only workout out on the days that say which dvd to use?

Does this set include the mobility dvds?