If you are attending college, then you just might be crashing from the demands of school work and in addition the hours that you work, if you have a job. You might also be getting physically sick (flu, etc.). Upon awakening if you still feel tired and unmotivated then there might be something else that is affecting you. People do tend to either overeat or not eat if there in a stressful situation and are feeling anxiety. Sometimes people binge because of their hectic schedules, they might skip lunch and breakfast and then are famished by dinner time, not a good thing. I would seek professional help If the oversleeping and overeating are over a long term period versus an isolated incident occurring for a short time. Hope you feel better.
They normally are, but see someone for a diagnosis and go from there.