I can only comment on the neck section of this book as I have not suffered from a bad back. I bought this book for my father who suffers with both and it lay unopened until I woke up one morning with terrible neck pain. I suffered in agony for about a week until I remembered this book, and then wished I'd remembered it much sooner. The first exercise started to work immediately and within a couple of days I was completely cured. The book is panned out with a lot of waffle, as are most, but I found just the one exercise invaluable and didn't really need to bother with the rest. It is the first neck exercise which is really easy to do and literally takes seconds.