RHYTHMS, CYCLES AND PERIODS IN HEALTH AND DISEASE
Abstract
In this review of rhythms, cycles and periods, reports are cited to support the view that both the physiological and psychological processes of man are influenced by recurrent biologic phenomena. Such periodic activities are basic ingredients in the behavior of human beings and actively influence man both in health and disease. Several theories as to the origin and perpetuation of these recurrent changes have been suggested but none has been completely validated. The true nature of rhythms, cycles and periods is a mystery and remains a challenge to future scientific investigations.
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