Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Treadmill Training and Workout Guide

If the book was titled "Treadmill Training and Workout Guide for Marathon Runners," it would have been more telling. The first 42 pages involve stretching exercises and is then followed by treadmill workouts for people who are training for marathons.If this is your goal then the book may be worth it. If your goal is general walking for health and exercise then there are better books out there.