remaining energy before sleep decide wake up time

[yh2000]

If player go sleep with more than 5/6 energy, will wake up in 6:00am.
more than 4/6 energy: 6:10
more than 3/6 energy: 6:20
more than 2/6 energy: 6:30
more than 1/6 energy: 6:40
low than 1/6 energy: 6:50

I think this feature can give player more reason to eat.

(obviously this will make game harder, so maybe this feature should be optional)