The TR90 Program Guide is your key to organizing and tracking your results throughout your first 90 days in the program. A companion to the NuFit 90 app and website: learn about the roles diet, nutrition and exercise play in weight management, what your Fit Number is, how to track your progress and read through some meal and shake recipe ideas. Weekly checklists are printed in the book, giving you an easy, portable way to stay on top of your TR90 Program.