A sleep diary is like a journal for your sleep habits. It helps you track things like when you go to bed, when you wake up, and if you wake up during the night. Plus, it can note naps, sleep quality, and other factors that impact your sleep. A sleep diary can help you spot patterns and problems with your sleep.
To keep one, use your sleep diary every day. If your sleep isn’t great and you’re using a diary, your doctor can use the info to help assess your health.