Walking is the best therapy and exercise I engage in daily. It's also a great opportunity to engage in some learning and thought. Malcolm Gladwell's opinions aren't mine but I always appreciate his perspective and approach. I've enjoyed his immensely readable prose but I find his Canadian lilt equally as listenable. There are a lot of seasons here to catch up on if this is new for you. Since the majority of his material is literally "historic" there's not a time crunch. It'll still be there the next time you want an engaging listen on a commute or workout. Enjoy!