This book by Brother Max Sculley DLS needs to be widely circulated among teachers, clergy and religious. This definitive critique of these practices comes with a timely warning that despite the surface appeal for helping fitness and relaxation and health, they are linked to Eastern philosophies that are incompatible with Christianity. "These practices and techniques cannot be viewed as only being of benefit at the physical and emotional levels.Of their very nature they draw a person into the spiritual realm. The techniques rely not only on physical movement, but engage a person in entering into an altered state of consciousness.Their powers derive from engagement with the spiritual world. Persons utilising the practices will be invited to engage their minds with the techniques in order for them to have any real benefit. This is where the danger lies." ( Bishop Julian Porteous ) from the foreword.