Let’s break it down,👇(Running explained 001) 🔹 Aerobic Means “with oxygen.” This is your easy, steady running where your body mainly uses oxygen as fuel. Think of your long runs, recovery runs, and most tempo work (heart zones 1–4). Basically: any effort longer than ~200 m depends on oxygen, that’s why endurance is your foundation. 🔹 Anaerobic Means “without oxygen.” Here your body relies on stored glucose for energy. It’s the fast, high-intensity stuff (zone 5), short intervals, sprints, hil