research has revealed there are numerous circadian rhythms in many organs and cells of the body
called peripheral oscillates, found in: adrenal gland, windpipe, liver, lung, etc.
Damiola et al demonstrated that changing feeding patterns in mice could alter circadian rhythms of the cells in the liver by up to 12 hours, while leaving the rhythm of the SCN unaffected
= other complex influences on SW cycle asides apart from master clock (SCN) - we shouldn't be reductionist