I'll tell you something: When you have a nap your REM cycles are very random. Once I had slept normally in the night... or less... I think it was like 6 hours. Then in the evening I was very tired so I took a one-hour nap from 6 to 7 PM. I had one of my best lucid dreams then so who knows... That means I definitely had a REM cycle in that hour. |
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