This is a book I was prepared to love based upon a newspaper review. Having read the book I have a far more ambivalent opinion - the concept for the book is excellent, the photography is excellent, the research for quotations is excellent - but the book is filled with over-simplifications. For example, it refers to the "Boddhisatva" ideal in Buddhism as if were basic - in fact, the southern school of Buddhism does not share this as an ideal. It refers to the practice of clearing the mind and non-attachment as if this separated mind from body and nature, whereas many of the traditions see these practices as making one more aware of the physical world as it is i.e. minus the distorting factor of mind. It refers to the washing of feet as "little known", an editorial comment that would puzzle most Catholics and other "high church" Christians. It speaks of gifts of the spirit (charisms) as if they belong to an exclusively Pentecostal strain of Christianity.
While the book occasionally notes its oversimplification, I am not comfortable with balance it achieves. It is, however, an excellent way to introduce the concept of physicality in prayer. It's photos and text firmly place physical prayer into the mainstream of religious practice and firmly negate any "new age" or "new fangled" charges leveled against it.