Most men live in a world dominated by a single periodicity, the alternation of light and darkness. This alternation adheres closely to a period of 24 hours, and all our life is geared to it. We wake and sleep, work and rest, eat and fast in a pattern which conforms to this alternation of light and darkness. The chief consequence of technological advance, is that now it is possible, by means of modern transport, to travel rapidly through several time zones and upset the physiological pattern which is known as the circadian rhythm of the human body.
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L Antal (1975) studied this question.