I have two books for you.  I think you’ll find them both easy and fun, and more to the point, useful.    The First 20 Minutes  If you want motivation to exercise, Gretchen Reynolds delivers tons of cool science that will validate what you’ve been doing or inspire you to take the next step, literally.  Walking turns out to be really good for you.  Go figure.  I love research and love that she found the cool stuff for you and me and distilled it into enjoyable bites. The First 20 Minutes: Surprising Science Reveals How We Can Exercise Better, Train …