I have read about research evidence that biphasic sleep (i.e. sleeping 2 times every 24 hours instead of once) is probably closer to the normal human rhythm. Typically two approaches are mentioned: ...
I always sleep from around 4am until 12pm (a total of 8 hours of sleep). It is kind of a Delayed Sleep Phase Disorder (DSPD) I am from an Asian country and there people believe that you should sleep ...