Boosting Immunity: Supplements Boosting Immunity: Supplements like vitamin C, zinc, and probiotics can bolster the immune system, helping the body defend against infections and illnesses. 4. Enhancing Performance: Athletes often use supplements to improve performance, aid in muscle recovery, and support endurance. Creatine, protein powders, and BCAAs (branched-chain amino acids) are popular choices in this regard. 5....