There are so many examples of ultradian rhythms in the body – our sleep cycles, brain activity and blood circulation are just three – so there is no one way to support all your ultradian rhythms.

For example, the expression of Glioma tumor suppressor candidate region gene 1 (GLTSCR1) increases in autumn across 16 different types of tissues, including in the brain's cerebral hemisphere.

Circannual (1 year) Circadian and diurnal rhythms, which control functions like sleep , body temperature, and hormonal changes, are most affected by light. Sunlight tells your SCN what time it is ...

For example, in the northern ... serum levels of 1,25-dihydroxyvitamin D 3 were observed in patients with RA from the north versus the south of Europe. 8 A circannual rhythm of trough levels in ...

Seasonal variation in metabolism: evidence for the role of circannual rhythms in metabolism? James E Gangwisch 1 Hypertension Research volume 36 , pages 392–393 ( 2013 ) Cite this article ...