I was very nocturnal during my undergrad years. Simply, I just couldn't study during the day. Always stayed up late till like 4-5 AM to get studying done for exams. I'm trying to fix this habit in D-school but who knows lol... I wanna get things done during the day like everyone else.
I need to sleep about 6-7 hours to function well throughout the day. 5-6 hours I can get through a day. Below 5... -_-
On the other hand, I don't like to sleep over 9 hours. I feel more tired throughout the day and all I want to do is sleep if I sleep more than 9 hours. That is so unproductive lol.