Ecological Systems and Devices Annotation << Back Value of functional and biorhythmic conditions of the person in safety of ability to live Tagasov V.I. In clause it is spoken about value of “the human factor” in safety of ability to live. The functional (phase) condition of the person is considered, recommendations for the analysis of modes of work and rest are given. Biorhythms of the person and their influence on efficiency of work are considered. Recommendations for an independent estimation of own biorhythms are given.