The wake-up insight identifies recent, sustained changes to your wake-up time.
Sleeping more can be the result of an underlying problem which leaves you feeling weaker or more tired. Waking up earlier multiple days in a row can indicate trouble sleeping.
When looking at the wake-up insight, some things to consider are whether you feel sleepy during the day, if you've noticed any changes to your mood, if you feel confused or if there's been any recent changes to your medication. These are things that are worth exploring with your doctor to make sure everything is okay.