3 ms·

There is definitely something to this. A similar phenomenon occurs on public transit-- waking up at (or just before) your stop. I found that if I've taken the

There is definitely something to this. A similar phenomenon occurs on public transit-- waking up at (or just before) your stop. I found that if I've taken the trip at least once, I can wake up pretty much exactly when I need to. Nearly every other frequent commuter I've discussed this with has a similar experience. I used to believe it was related to subtle audio/visual cues while unconscious, but it might just be a function of a sense of time.

yesenadam 6y ago
Yeah, does seem more likely it's my brain knowing the time fairly accurately from the early morning light levels, bird song, traffic noises, temperature, smells in the air etc, and other cues I'm not consciously aware of, than that I have a timer, accurate to a few minutes over 9 or 10 hours, in my body.