What is another word for day-night rhythm?
Pronunciation: [dˈe͡ɪnˈa͡ɪt ɹˈɪðəm] (IPA) 
Day-night rhythm refers to the daily cycle of rest and activity that humans and many other living things undergo. However, there are several synonyms and alternatives to this term. The most common synonym is circadian rhythm, which refers to the body's internal biological clock, which regulates daily physiological and behavioral patterns. Other synonyms include diurnal rhythm, 24-hour rhythm, and sleep-wake cycle. Additionally, the term chronobiology is often used to describe the study of these daily rhythmic patterns in living organisms. Regardless of the term used, it is clear that the day-night rhythm is an essential component of human health and well-being.
