IR VERDICT:
THE LITTLE BLACK BOOK OF WORKOUT MOTIVATION, by Michael Matthews, is a no-nonsense, science-backed guide to working out and staying in shape. Forget hand-holding and run-of-the-mill exercise advice. Using practical instruction and real-life examples like Elon Musk and Arnold Schwarzenegger, the author’s streamlined approach eschews mainstream fitness gurus and sets you on the track to lifelong fitness, and a more committed attitude toward life and success in general.