Biological rhythms: the science of chronobiology.

@article{Arendt1998BiologicalRT,
  title={Biological rhythms: the science of chronobiology.},
  author={Jos{\'e}phine Arendt},
  journal={Journal of the Royal College of Physicians of London},
  year={1998},
  volume={32 1},
  pages={
          27-35
        }
}
Biological rhythms are an essential component of homoeostasis: 'everything is rhythmic unless proved otherwise'. Circadian (ca 24 h) rhythms are driven by an internal clock situated in the hypothalamus. Without time cues, they deviate from 24 h and assume a periodicity of, on average, 24.3 h. Periodicity is inherited, and progress has recently been made in identifying 'clock' genes. Circadian rhythms are synchronised to the 24-h day mostly by light-dark cycles and social time cues. Suitably… CONTINUE READING

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