Maintenance of juvenility during the life span: good wish or reality?

Physiological basis of human health, conservation of adaptive abilities and high capacity for work during the life span are considered. Convincing proofs of the role of biorhythmic processes, their misbalance in regulation of processes of vital functions and the importance of maintenance of organism's mineral balance for extension of the period of active creative and healthy life are presented. If we want to keep young in the life span we must come back to the nature, its rhythms which means to return to a natural life style. Dominating feature of our character should be rationality, striving for spiritual life habits, creative endeavors, optimism. To achieve this aim - to maintain health and youth during the life one should be guided by: - natural rhythms of biosphere and Cosmos; - spiritual appeals and wisdom of scientists and philosophers of the past; - lessons of lithophags (rational use of minerals) - to be physically active, to be engaged in sports as it had been in Ancient Greece.