Weight loss as a goal isn't necessarily for everyone. For anyone who has a history of disordered eating, even if you're in recovery, you should speak with a doctor before you pursue any weight-loss goal, including starting a new exercise routine. And even if you don't have a history of disordered eating, it's really important to have realistic expectations and make sure you're pursuing weight loss in a healthy way. Results can be incredibly difficult to come by, may take a very long time to achieve, and are also really hard to maintain. Plus, exercise is only part of the equation. Your eating habits matter (more on that below), and getting sufficient sleep and keeping stress levels low are both important, too. With so many factors at play, it's no wonder weight loss is a very unique experience for every person. “Nutrition is priority numero uno—you can’t out-train a bad diet,” he adds. “Eighty percent nutrition plus 20 percent training equals 100 percent beast!” But there’s no need to completely overhaul your life at once if it feels too overwhelming at first, he says. “If you’re in the habit of working out, that may naturally lead you to start exploring healthier eating options. If you’re not there yet, that’s cool—just start working out and make some tweaks. Start small.”