Primer on Protein, Part 6: The Immune System

In the final article in this six-part series, we discuss how following CrossFit’s fitness and dietary guidelines not only enhances physical performance but also fortifies your body’s immune system. Protein is vital in this process, supporting immune cell production and function. High-quality animal proteins provide essential amino acids like glutamine, arginine, and cysteine, critical for immune defense and recovery. This holistic approach to health strengthens your body against chronic diseases and acute illnesses alike, making fitness a lifelong pursuit.