Keeping a sleep diary allows you to track your sleep habits and present the information to a doctor. It can help identify potential sleep disorders and poor sleep habits. The diary should record details of bedtime routines, time asleep, disruptions, and daytime activities like caffeine intake and exercise. Tracking sleep over the course of a week can help pinpoint issues and highlight areas to improve sleep, such as reducing screen time before bed and exercising daily. Maintaining a consistent sleep diary provides a clear picture of sleep patterns to discuss with a doctor.