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  Metabolism is one of those words we hear all the time—especially when talking about weight gain, energy, and aging. Many people believe that once you hit your 30s, your metabolism slows dramatically. But what does science actually say? Let’s break it down 👇 What Exactly Is Metabolism? Before we dive into the age factor, let’s get clear. Metabolism is the process by which your body converts food into energy. It powers everything—breathing, digestion, movement, even when you’re sitting still. Your Basal Metabolic Rate (BMR) makes up most of your calorie burn. That’s the energy your body needs just to function. When Does Metabolism Start to Slow Down? For years, people thought metabolism tanked in your 30s. But a large study published in Science (2021) found something surprising: From infancy to your 20s → Metabolism is at its peak. From your 20s to 50s → It stays pretty steady. After 60 → It begins to decline gradually (about 1% per year). 👉 So, if you’re in ...