I want you to know how happy your book made me — I have been looking for this kind of help for over 10-years!  And your book is above and beyond my expectations and hopes for some knitting physical therapy.  Already, your stretching exercises have helped my painful shoulders/upper arms!  I knit many hours a day, and I am now 74, so it is imperative to get moving in the hope of knitting into my rocking chair years.