I picked this up because I've been bitten by the fitness bug this year: I hired a personal trainer and have been working out 2-3 times a week for the last 3 months, for the first time EVER in my life. That means I know next to zero about fitness. I've always been a big walker, in fact, my dream life is just walking all day, like Henry David Thoreau. Anyway, of course I am inpatient so in this 3 months, I am shocked that I am not now perfectly fit with a 6 pack and solid triceps (that is the underarm one, right?!) so I wanted to learn more about the process. The book overall was interesting, enough that I listened to it in a couple days, mostly while walking my dogs or cleaning the house. It didn't help me get more fit but overall just a lot of insightful anthropological information.