Instruct: Classify the given Amazon review as either positive or negative.
Query: Great Confidence Builder

I had been running for a couple of years, Doing 5k and twice a 10k. I had made great progress dropping from 185 pounds to 155 pounds. However my progress had stopped, I could not break the 29 min barrier on 5k or the 60 min barrier at 10k. Not until I read Galloway's book, yes all of it, did I understand enough about how running works to make some goals. It is funny while informative, Answers the questions you want asked, differentiate what is his opinion and what he believes is fact. I am now on the verge of a Half marathon and have little doubt i will make my goal of 2hr 20min. Not bad for a 55 year old. I reccomend it highly.And oh yes, I have done a sub 27 min 5k