2012, Hudson Street Press
Yet another book found this summer in the beach condo, the main take away for me: scientific studies showing that the most significant improvement to well-being and health comes from simply getting up off the couch. (Too many people don't.) Doing something, anything!, is way better than doing nothing. After that, some studies show, if you run for 20 minutes or for 5 hours, it doesn't necessarily make that much of a difference, and it's better to walk 20 minutes everyday, than once a week for 20 miles. (Do keep in mind that I left this book at the beach and am relying on my memory here.)
Now, for true athletes, there is more detailed advice which, not being a true athlete, I didn't read carefully, but I did read that a very intense (and preferably painful) few minutes of exercise, in alternation with less strenuous periods of exercise, has been proven to be better for health than a longer period of somewhat intense exercise.
I truly wish I were more interested in this very important and personally much needed information, in which case I would have read the book in greater detail. But if you're interested, you can do so!
Actually, I think the book inspired my daily walks on the beach, so didn't fall completely on deaf unexercised ears!