| http://www.w3.org/ns/prov#value | - The circadian clock is housed in a part of the hypothalamus called the suprachiasmatic nucleus, or SCN. The SCN controls many functions of the body that fluctuate over our natural circadian period, which is about 24 hours long, including sleeping and waking cycles, body temperature, appetite, and many others. ???The SCN is the master oscillator, and it can be considered to be the conductor of a sy
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