sleep regulation

Sleep regulation involves two main processes: the sleep drive and wakefulness. The sleep drive builds up the longer you're awake, making you feel sleepy, and decreases during sleep. Meanwhile, a biological clock called the circadian rhythm, influenced by light and darkness, helps determine optimal sleep and wake times, promoting alertness during the day and sleep at night. Together, these processes coordinate to balance sleep and wakefulness, ensuring restorative rest and proper functioning. Disruptions to either process can lead to sleep problems or fatigue.