Sleep advice (such as in sleep as android):
Summary of those factors that are positively or negatively associated with better sleep quality
Analysis of factors that influence sleep quality (deep sleep/time asleep/rem)
Including automatic recorded such as time in bed, timepoint of awakening, female cycle,
but also with user added labels, such as geolocation, coffee, alcohol etc).
Top positive and negative factors can be shown.
One step further would be to reformulate this in an advice (Stay in bed for x amount of time to get the best deep sleep, etc).
Can also be included in the fitbit weekly/monthly report.
(this week/month/overall you got the most deep sleep/time asleep/etc with the factors of time in bed X, etc).
Moderator edit: Updated subject for clarity.
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