chronobiology

(noun)

The study of the effects of time on biological systems, especially the effects of periodicity.

Examples of chronobiology in the following topics:

Circadian Rhythms
- The study of circadian rhythms (and biological temporal rhythms in general) is called chronobiology.
Seasonal Affective Disorder and Jet Lag
- Jet lag is a chronobiological-related problem, similar to issues often induced by shift work.