Circadian rhythms are intrinsic biological clocks that regulate various physiological processes, including sleep, metabolism, hormone production, and cognitive function. Governed primarily by the suprachiasmatic nucleus (SCN) in the hypothalamus, these rhythms synchronize the body’s internal timing mechanisms with external environmental cues such as light and temperature. Research by Czeisler et al. (1999) in “Stability, Precision, and Near-24-Hour Period of the Human Circadian Pacemaker” underscores the importance of maintaining synchronized circadian rhythms for optimal health. Disruptions can lead to sleep disorders, metabolic issues, and decreased cognitive function. Understanding the science behind circadian rhythms is crucial for developing AI systems that enhance human health by aligning with these natural cycles and designing AI integrated with BCI (Brain-Computer Interfaces) systems that serve as an extension of the SCN. The SCN receives direct input from the eyes, adjusting the body’s internal clock based on light presence. This process regulates the sleep-wake cycle, ensuring bodily functions align with the 24-hour day. The SCN also influences other circadian oscillators throughout the body, coordinating various physiological processes to maintain homeostasis. Disruptions to circadian rhythms, caused by irregular sleep patterns, artificial light exposure, and shift work, can lead to significant health issues.