A sleep diary is a record of your sleep patterns, including when you go to bed, how long you sleep, and how you feel in the morning. It helps you keep track of your sleep habits and find ways to improve your sleep quality. Full definition
All completed one week of sleep monitoring by keeping sleep diaries and wearing activity monitors. (sciencedaily.com)
This was one of the first large studies to combine sleep diaries with a technique called wrist actigraphy that uses a motion sensor — worn like a watch — to measure not just when people go to bed but when they fall asleep. (uchospitals.edu)
Tons of people who have objectively bad sleep as measured by surveys, brain waves, and sleep diaries actually don't feel troubled about their sleep at all. (inc.com)