Circadian biology is the study of the biological rhythms that follow a 24-hour cycle, influencing sleep, metabolism, hormone release, and many other essential bodily functions. These rhythms are driven by the circadian clock, an internal timekeeping system that helps the body anticipate and adapt to regular changes in the environment—especially the cycle of light and darkness. Understanding circadian biology is crucial in today’s fast-paced, artificial light-filled world, where many people suffer from circadian disruption without even realizing it. The Science Behind Circadian Biology At the heart of circadian biology is the suprachiasmatic nucleus (SCN), a group of neurons located in…