A regular sleep pattern refers to a consistent and predictable schedule for going to bed and waking up each day. It means that an individual follows a routine where they go to bed at around the same time every night, get a good amount of restful sleep, and then wake up at approximately the same time each morning. Having a regular sleep pattern is important because it helps regulate the body's internal clock or circadian rhythm, which in turn can improve overall health, mood, productivity, and energy levels throughout the day.