Yeah well maybe I am a lazy person. :) I also think its a matter of age. (I am 22). I can function with 5 hours of sleep but only if my tasks require from half

Yeah well maybe I am a lazy person. :) I also think its a matter of age. (I am 22). I can function with 5 hours of sleep but only if my tasks require from half an hour to one hour of continuous focus. I usually need breaks. 8 hours is ideal though, no need for coffee or naps, and I can focus for quite some time.