Phase-adjustment of human circadian rhythms by light and physical exercise

  title={Phase-adjustment of human circadian rhythms by light and physical exercise},
  author={Yujiro Yamanaka and James M. Waterhouse},
  journal={The Journal of Physical Fitness and Sports Medicine},
The human circadian system derives from two distinct circadian oscillators that separately regulate circadian rhythms of body temperature and plasma melatonin, and of the sleep-wake cycle. The oscillator for body temperature and melatonin is the central circadian pacemaker, located in the hypothalamic suprachiasmatic nucleus (SCN), and the oscillator for sleep-wake cycle is another oscillator, located in the brain but outside the SCN. Although bright light is a primary zeitgeber for circadian… 
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