:-*I usually sleep 7 or 8 hours a day,because i think it's make me have a good mental state.
yups there is nothing more best than Sleeping completely but as we go older we cannot sustain that longevity of sleeping because our mind will wake even how much we wanted more sleep.I should know because nowadays i am starting to feel the same.
I usually only sleep for five or six hours a day. I wake up early in the morning and can’t sleep late. I always feel that my sleep is shorter than others, but I don’t feel very tired.
I guess I know how old are you now 