In order to effectively use the sleep log to improve sleep quality, I think it might be helpful to be able to annotate each log entry with comments about things that might affect sleep quality (eg alcohol consumption, use of sleeping tablet, late caffeine intake, late exercise, meditation/ relaxation, consumption of unusual foods etc). Then, on review of several weeks/ months of sleep logs, patterns may become evident.
Moderator Edit: Added Labels/Title for Clarity
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