According to my sleep cycle app, I sleep for an average of 5 hrs 15 mins per night. I also do a nap of 20-40 mins(depending on how fast I eat) during lunchtime. while readng up on biphasic sleep, it seems that biphasic sleeping hours add up to 6hrs per day and with that people are much refreshed.
i don't believe in monophasic sleep because
1) it takes up too much time
2) people usually just get through the natural mid day slump by drinking coffee or tea or chionging on.
when the mid day slump hits, i just take a nap.
i've also figured out my most alert hours. my most alert hours are from 3.30-6pm. hahahaa. maybe also cos it's not so hot then? :\