Step 1: Understand what amino acids are. They are the building blocks of proteins.
Step 2: Learn the difference between essential and non-essential amino acids. Essential amino acids cannot be made by the body and must come from food.
Step 3: Identify which amino acids are essential. One of them is leucine.
Step 4: Remember that leucine is important for muscle growth and repair.
Step 5: Conclude that leucine must be included in your diet since your body cannot produce it.