Circadian performance rhythms: some practical and theoretical implications.

  • Samuel Folkard
  • Published 1990 in
    Philosophical transactions of the Royal Society…


Safety and productivity are low at night and this would appear to be because we are a diurnal species. This is reflected not only in our habitual sleep time, but also in our endogenous body clocks that, together with exogenous influences, such as the patterning of meals and activity, result in predictable circadian (24 h) rhythms in our physiological… (More)


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