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John_Maxwell_IV comments on My simple hack for increased alertness and improved cognitive functioning: very bright light - Less Wrong Discussion
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Comments (126)
The Zeo sleep manager has an option where it will play an alarm noise at a point in your sleep cycle when you're close to awake anyway. (It monitors N minutes prior to your alarm time, watching for you to enter light sleep, where N is configurable.) Works well for me.
Has anyone tried a accellerometer based sleep cycle alarm clock smartphone app?