Basic factors determining the health (or illness) in a man's organism are considered. The term "health" is given. It is said that a man's health is a composed multicomponent structure, therefore the most efficiency of the healthy influence can be provided by the complex of the facilities directed on making healthy both somatic and psychical spheres of a man's vital functions. Indexes, which reflect integrally functional condition of the whole organism are determined. An author's method is offered which lets not only calculate the health level of a man's organism, but orientate an ordinary individuum to use a wide spectrum of different healthy means.