Amino acids are more than just a fitness buzzword - they’re the building blocks your body needs for muscle, mood, energy, and recovery. In this episode of Ask a Nutritionist, dietician Teresa Wagner explains the difference between essential and non-essential amino acids, how to meet your protein needs through real food, and when supplements like whey protein, collagen, or creatine might be helpful. Learn how amino acids support your metabolism, immune system, sleep, and more, and walk away with practical guidelines to fuel your body at any age.