Hey. I am currently preparing me for my future work with 2x1.5h sleep naps during the day. Do i need to put an alarm clock for this 90-min sleep, or do i wake up after this? Tried earlier the 20-min and it works pretty well with the "bell" at the end :)

Thanks,
Gregs
I always wanted to try polyphasic sleep and never did. It happens naturally in infants but once they get older, they sleep 8 hours like the rest of us. All our brains are synchronized to the sun ... if you want to truly become a night worker you'll need to pretend you live on the other side of the planet. :)
D. gregory