“Sweat: A History of Exercise” by Bill Hayes; Bloomsbury Publishing (256 pages, $28) ——— Run for your life. And swim, bike, and walk for it, too. Of course, if you don’t want to stick around for a healthy old age, don’t sweat it. Just don’t do it. You’ll get to the end a lot faster. But for thousands of years, people have known perspiration plus persistence results in a longer, happier life. It’s a simple fact: Workouts work. But it’s a complicated story, as Bill Hayes recounts in “Sweat: A History of Exercise.” He’s well suited to it, too. Hayes is dedicated to his workouts and has written ab…