Two steps forward, one step back

I think I'm substituting sleeping for eating, which can't be right. I've been sleeping longer and taking more naps, so basically I'm awake for about 12 hours a day. I'm pretty sure this isn't healthy. Thing is, when I sleep my hunger doesn't bother me. I can go to bed a little hungry and wake a little hungry. Isn't our digestive system supposed to slow down when we sleep? Maybe this is my body's way of coping with calorie and fat restrictions. I know the next step is to get active, but it's hard to get myself to take a walk when all I want to do is curl up and snooze away.