This book is only for those who are serious about getting in shape and are willing to spend alot of time doing it.The exercises are good, but you'll need to spend two hours a day on just strength training.I followed the book for a little while,but I just couldn't keep it up.Who has time to do hundreds of reps of the same exercises every day?Take my advice.Stick to a simpler workouts and invest in some weights.You'll see the same results in a quarter of the time.