I was like Peace... I took to sleeping like a teenager for about 4 months! Hours and hours and hours! I started to think I was just going to be like that forever when it all started to go back to normal. Now I am feeling pretty much "the same" in terms of sleep and eating and concentration and all the things that got messed up for those few first months.
So hang in there. It may well come back to what you are used to (minus the cough and the stinky clothes and all that, of course)...
