If you're heading into a workout without eating right, you're starting at a deficit before you even pick up a weight. Here's the simple way to think about it — F.U.E.L. F — Fast-digesting carbs A banana, rice cake, or a few pretzels. You need quick energy your body can actually use in the next 30 minutes — not something that takes hours to break down. U — Use a little protein Not a full meal. Just enough (think a few almonds or a small scoop) to reduce muscle breakdown during your session. This isn't the time for a big protein hit — that's for after. E — Easy on your stomach Nothing heavy, greasy, or high-fat right before you lift. Fat slows digestion, and the last thing you want is your body working on breaking down a meal while you're also trying to squat. L — Limit fiber Save the salad and the beans for later. Fiber is great for you, but eaten too close to training, it can sit in your stomach and cause cramping or bloating mid-set. Why 30 minutes matters: it's close enough that the carbs are actually available as fuel when you need them, but far enough out that your body isn't still trying to digest a big meal while you're moving. This is the difference between training on empty (or training on a brick in your stomach) and training with actual usable energy.