Energy

Running long distances — whether it’s a half marathon, marathon, or ultra — isn’t only about fitness. It’s about managing your body’s energy systems so you can keep moving mile after mile without “hitting the wall.” Endurance comes from the way runners fuel, pace, hydrate, and train their bodies to efficiently use energy.

The way you prepare before a run can make the difference between feeling light and powerful or sluggish and fatigued. Pre-run energy prep is about giving your body the right fuel, hydration, and activation so you start strong and sustain your pace.

Energy isn’t only about caffeine or quick fixes. True daily energy comes from how well you fuel, rest, move, and manage stress. By building the right habits, you can improve focus, productivity, and stamina throughout the day — whether for training, work, or life.

Every step you take requires energy. That energy comes from the breakdown of carbohydrates, fats, and sometimes protein inside your body. But how your body delivers that energy depends on the intensity and duration of your run. This is where the three main energy systems come in.