Protein is the only truly essential macronutrient. Why? Because it’s the only one you must eat every day to stay alive and healthy. Your body can make its own carbohydrates. It can even recycle and store fats for later use. But essential amino acids (EAAs; the building blocks of protein) must come from your diet, every day. The catch? You don’t just need a lot of EAAs… You need specific ones, in the right amounts. And not all proteins deliver. Most animal-based proteins (like eggs, beef, or whey

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