A circadian rhythm (/ sərˈkeɪdiən /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any process that originates within an organism …

Mar 15, 2024 · What is circadian rhythm? Your circadian rhythm is the pattern your body follows based on a 24-hour day — it’s the name given to your body’s internal clock. This rhythm tells …

Jul 23, 2025 · Perhaps the most well-known circadian rhythm is the sleep-wake cycle, which determines how sleepy or alert you feel throughout the day and night. We cover how circadian …

Jan 22, 2025 · Your circadian rhythm plays a large role in your sleep-wake cycle, telling your body when it's time to sleep and wake up for the day.

May 20, 2025 · Circadian rhythms include some of the physical, mental, and behavioral changes an organism experiences over a 24-hour cycle. Light and dark have the biggest influence on …

Nov 19, 2025 · Circadian rhythm, the cyclical 24-hour period of human biological activity. Within the circadian cycle, a person usually sleeps approximately 8 hours and is awake 16. The cycle …

Mar 5, 2025 · Circadian rhythm, also known as the sleep-wake cycle, is the internal clock that regulates the body’s sleep and wake cycles over a 24-hour time period. The circadian rhythm …

Jul 27, 2025 · How it Shapes Your Health The circadian rhythm profoundly influences human physiology and behavior. It dictates our natural sleep-wake cycle, determining when we feel …

Sep 2, 2025 · A circadian rhythm is a natural process that regulates physiological and behavioral changes. The term circadian comes from the Latin phrase “circa diem,” which means “around …

Mar 10, 2025 · A circadian rhythm is the natural, internal clock that regulates the sleep-wake cycle and repeats roughly every 24 hours. It is, therefore, the internal time-giver of an organism, …