BIOMUSCLE SCIENCE Beta Alanine Extreme fuels your body´s ability to increase muscle carnosine synthesis! What is carnosine? Carnosine is composed of beta-alanine and L-histidine and your body simply cannot synthesize carnosine without beta-alanine. Carnosine is found in large amounts in Type II or “fast-twitch” muscle fibers, which are used in explosive movements like weight training and sprinting. Carnosine helps activate enzymes responsible for generating muscle contractions. Supplementing with beta-alanine has surmised to significantly delay muscle fatigue to help you squeeze out the last growth-stimulating reps.