You don’t have to be an elite athlete (or even a terribly athletic person) to benefit from the framework of a professional training routine. That’s because the key aspects of how the pros exercise can translate to just about any scale. It’s why we’re fans of the 80/20 principle—the theory that 80% of your results come from 20% of your actions. If you tweak just a fraction of your routine for the better, you’ll influence the vast majority of your outcome for the better. Here are a few cornerstones to maximize every hour you spend at the gym.