Beta-alanine is a non-essential amino acid that plays a pivotal role in enhancing athletic performance and endurance. It is a key precursor to carnosine, a dipeptide found in high concentrations within muscle tissue. Carnosine acts as a buffer, helping to maintain optimal pH levels in muscles by neutralizing the accumulation of hydrogen ions produced during intense exercise. This buffering action is crucial for delaying the onset of muscle fatigue and enhancing overall exercise capacity. Unlike essential amino acids, beta-alanine is synthesized in the liver and does not play a direct role in protein synthesis. Instead, its primary function is to increase muscle carnosine levels, which in turn improves high-intensity performance and reduces fatigue during prolonged activities. Supplementation with beta-alanine has been shown to significantly increase intramuscular carnosine concentrations, leading to improved endurance, strength, and muscle performance. Additionally, beta-alanine may have antioxidant properties and support the immune system, further contributing to its benefits for athletes and fitness enthusiasts. Commonly included in pre-workout supplements, beta-alanine is often associated with a harmless tingling sensation known as paresthesia, which typically subsides with regular use. Ensuring an adequate intake of beta-alanine through diet or supplementation can be instrumental for individuals looking to enhance their physical performance and delay muscle fatigue.