If you think you wake up a minute before the alarm by chance, that’s not the case. According to specialists from the University of Sunshine Coast (Australia), this phenomenon indicates the coordinated work of the body's internal biological clocks. As reported by *The Conversation*, even in complete silence and without external stimuli, the body can accurately determine the time. This is managed by the suprachiasmatic nucleus—a small group of neurons in the hypothalamus that regulates circadian rhythms. This center regulates not only sleep and wakefulness but also body temperature, hunger, metabolism, and other processes occurring throughout the day. If a person adheres to a stable schedule—going to bed and waking up at roughly the same time—the brain gradually memorizes this routine and begins to prepare the body for awakening in advance. ### The Body Starts to Wake Up Even Before the Alarm Rings Waking up is not an instantaneous process. About 30–60 minutes before the usual wake-up time, the body begins to gradually adjust. During this time, several important changes occur: * body temperature starts to rise; * melatonin production—the sleep hormone—decreases; * cortisol levels increase, helping the body transition to a state of wakefulness. Thanks to these processes, by the time the alarm rings, the brain is already almost ready to start a new day. > "When you wake up a minute before the alarm and feel refreshed, it means your internal biological clocks are working as nature intended," explains Greg Elder, an associate professor of psychology at the University of Sunshine Coast. ### When Early Waking Is a Cause for Concern According to scientists, it is important to pay attention not only to the time of awakening but also to your well-being. If you wake up shortly before the alarm and feel alert and rested, it indicates that your biological clocks are functioning correctly. However, if you regularly wake up significantly earlier but feel tired, sluggish, or drowsy, the cause may be chronic stress, anxiety, depressive states, or sleep disorders. Waking up a few seconds or minutes before the alarm is most often a sign of well-tuned circadian rhythms, not a coincidence. However, if early awakenings are accompanied by constant fatigue, specialists recommend paying attention to sleep quality and consulting a doctor if necessary.