That’s… a pretty good theory! Whenever I do achieve an early wake-up time, I have trouble holding on to it, quickly waking later until I run up against the “unacceptably late time to wake up” barrier. This is maybe consistent with an ever-advancing internal sleep-wake rhythm. It isn’t periodic in the way you describe your experience though.
That’s… a pretty good theory! Whenever I do achieve an early wake-up time, I have trouble holding on to it, quickly waking later until I run up against the “unacceptably late time to wake up” barrier. This is maybe consistent with an ever-advancing internal sleep-wake rhythm. It isn’t periodic in the way you describe your experience though.