Circadian Cycle

The circadian cycle is your body's internal biological clock that regulates various functions over approximately 24 hours. It influences sleep-wake patterns, hormone release, body temperature, and other physiological processes. This cycle is primarily governed by the brain’s suprachiasmatic nucleus, which responds to light and darkness in your environment. Exposure to natural light during the day helps keep your circadian rhythm synchronized, promoting alertness, while darkness signals your body to prepare for sleep. Disruptions to this cycle, like shift work or irregular sleep hours, can affect overall health, mood, and performance.