Spirulina is a dietary supplement containing two species of algae (cyanobacteria): Arthrospira platensis and Arthrospira maxima occurring in the area of lakes in tropical climates, containing BCAA [3 essential amino acids having a branched chain aliphatic side (isoleucine, leucine, and valine) and a similar course of metabolic processes in muscle tissue. In its natural form found in high-protein animal foods (i.e. beef, milk proteins). BCAA have the anti-catabolic potential and anabolic. Support energy carriers in the energy crisis and affect the functioning of the nervous system (eliminate stress, reduce fatigue), and hormone activity and kinases responsible for the metabolism of proteins. In the sports supplementation it is used as support elements functional capacity (strength and endurance) and post-workout recovery; also anti-catabolic and anabolic catalyst of change. Taking BCAA after exercise almost immediately restores the levels of these amino acids in the blood (excluding liver) and supplies the muscle tissue. Leucine results in the activation of mTOR (starting anabolism of muscle proteins) and has a reinforcing effect of insulin which acts on the PI3-kinase and protein kinase B). Branched chain amino acids BCAA, readily used by strength athletes, strength-endurance and endurance], organic acids (GLA, ALA, Linoleic acid, and others) and vitamins B and C, D, E. Spirulina improves the functioning of the nervous system (improves the ability of concentration and memory), reduces total cholesterol and triglyceride levels, belongs to the group of antioxidants. In the supplementation often used by the elderly, available as a nutritional and functional supplements and due to the thermogenic effect by people on weight-loss diet, available at www.muscle-zone.pl.