text: All the people I have known including myself like Body for Life; teaches them about healthy eating and resistance training.  The interval cardio workouts are great.  The results vary from person to person, but significant changes can be made in 12 weeks, though most are not near the pictures in the book.  An average of about 10lbs was lost, but they also added muscle and felt much better.  It's a good beginners book :); I'm not a beginner and didn't have much to lose, but this book helped me get motivated again and helped me get back into the gym.  good luck