Result
(5 sleep cycles)
--
(6 sleep cycles)
--
If you have different arrangements, you may also choose one of the following times:
-- (7 sleep cycles)
-- (4 sleep cycles)
-- (3 sleep cycles)
-- (2 sleep cycles)
-- (1 sleep cycles)
If you wake up at one of the above times, you will get up in between the 90-minute sleep cycles, assuming it takes you 15 minutes to fall asleep. It is recommended to have 5-6 complete cycles of sleep every night.