For myself, the more sleep I get, the happier I become. I've noticed that on the days I get 5 hours of sleep or less, I act erratic and mostly through anger. On some of those special days where I get more than 8 hours of sleep, it feels like heaven. All of the senses are clean, concentration is clear. But of course too much of anything is bad, and sleep is no different. Once I slept for 14 hours and had a very hard time getting up; I took nearly 1 hour 15 minutes to open my eyes and get out of bed
so its best to keep your sleep schedule within regulated boundries, wherever they may be.