Psychodietetics and supplementation specialization in sport is combining scientific knowledge of psychology, dietetics and knowledge about taking supplements. Each person practicing sports should bear in mind that a properly balanced diet is one of the elements that determine the possibility of achieving satisfactory results. With general recommendations that the meals consumed by athletes should be low-volume and easy to digest, supplements become the optimal solution. Most people who regularly practice physical activity follow a diet and use dietary supplements to improve their fitness.