I myself ZZZ for 8 hrs per day.So far so gd.I guess how many hrs depends on yr body.
Well it's gd to be by bed b4 11pm as i ever read an acticle about our body,we should let our bady rest by 11pm.
I normally sleepp@ 10pm or 1030pm,wake up 7am or before.
The other time I went to chalet with my family,I just couldn't sleep @ all. Slept at 1am,woke up 3am,slept @ 4am,woke up 6am.gosh! Not enough sleep that nite was so terrible & next day iwas like a ZOMBIE....Yawb yawn yawn.How many cups of Copi also no use @ all.....
I'm a coffee addict.Am must hve a cuo of copi O gosong to start my day.