Olimp HMB (hydroxy methylbutyrate) is a bioactive substance with an action similar to that of vitamins, found naturally in small quantities in food and produced in the human body. HMB is produced in the body as a protective substance alleviating the effects of stress associated with physical effort, fasting, febrile diseases, body traumas, and excessive generation of oxygen free radicals. HMB limits the decomposition of body proteins, potentiates fat burning, lowers cholesterol level, and supports the immune system. The requirement for HMB increases exponentially in conditions of increased physical activity – its supplementation leads to a significant improvement of physical exercise capacity. HMB is recommended: • for accelerating and potentiating the adaptation to physical effort (improvement of muscle mass, strength and endurance, and of aerobic capacity) in physically active persons and high-performance athletes • as a “fat burner” and protector in body mass reduction programmes (slimming) • for preventing the adverse health effects of environmental and oxidative stress (nervous lifestyle, work in industry, heavy physical work, etc.) • in convalescence after disorders associated with an increased nitrogen loss • for alleviating the symptoms associated with old age (senile marasmus, muscle mass loss, muscle strength impairment)