Pure water for more than 24 hours. No chewing gum, no mentos, nothing. The exhaustion kicks me down at 8 pm and I sleep until 8:44 am. I am now getting ready for the gym, despite barely being able to move. But who cares? Two and a half hours in the gym should be more than enough to burn 1000 calories -- I have never done it, but I know I can. The most I've burned was 800 calories in less than 2 hours, I think.
Hopefully I won't fall on the kitchen floor again, for there will be no one to hold me and take me upstairs.