content: I enjoyed the book for the most part and learned some things. However, he seemed to repeat the information a lot (guess repetition is the key to memory). It was to a point that annoyed me though, then again repetition annoys me period. lol. Also, somethings kinda contradicted themselves, but for the most part it was a pretty decent book and I did learn some things and def recommend this vs regular running relying on super thick soles praying the shoe will protect you. Which will! give you more injuries later down the road.