Mike Boyle, strength coach to the 2013 world-champion Boston Red Sox, was told early in his career, “You can never exercise enough to overcome a bad diet.” Today, this knowledge still underpins his food choices while training. “I enjoy my indulgences, but I don’t make them a daily habit,” he says. “Instead, I fuel my body properly so I can go harder and longer.”
Great advice like that can stick with you forever. So we decided to turn to Boyle—and other fitness advisers who have risen to the top of the industry—to find out what they preach now that they’ve made it. Here’s what they had to say. Even if you are an amateur gym-goer, these tips will inspire you to stay in shape and live a fertile lifestyle.