19 ms·

> I usually easily wake up with first/second alarm at 6:00/6:01 and feel fresh. I thought the signal for good sleep was that you didn't need an alarm to wake u

• hal9000xp 11y ago
  I need alarm because I need to keep my sleep schedule in strict time frame. I often wake up at 5:30 because I slept very well at night. But I stay in bed and waiting for alarm. If I didn't sleep very well, I could wake up at 6:30, but my alarm triggers at 6:00 and I wake up at 6:01. In the beginning of my experiments with sleep, I tried to use natural wake up. But my sleep schedule started floating a lot and sleep quality degraded when offset become big. So I decided to keep strict sleep schedule. It's very balanced. If one night my sleep quality wasn't very good, then next night it's guaranteed that I have good sleep quality. But alarm clock guaranteed that I don't oversleep. I found "sleep restriction" for the first time here (look at "case illustration" on page 3): http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3060715/pdf/nihms-279100.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3060715/pdf/nihm... After I just read another articles which I found by keywords "sleep restriction". It also contains very useful ideas about mindfulness meditation. I wrote about it in another comment: https://news.ycombinator.com/item?id=10564930 https://news.ycombinator.com/item?id=10564930