After doing a short "field" test (in quotes, because I tested it while at work as a teacher) something came to mind about calorie requirements. I had one Mainstay meal in the morning and another midday. I felt fine in the morning, but a couple of hours after the midday portion, I became hungry. Realizing that the calories are meant to sustain one in a survival situation...sustain, not necessarily comfortably keep one's hunger at bay, I realized that my body is used to more calories than someone of average size. What I'm saying is that I'm overweight. Is it likely that I will need more than 1200 calories per day just for normal actvity, or will my generous reserves of body fat provide some of that energy too? I'm trying to figure out if I should pack more rations than a person of a healthy weight would. I'm stocking the car for a shelter in car situation (most likely stranded in a Midwest winter) and I'm also planning to carry a three day supply for myself in my EDC bag.

The simple answer is, get myself to a healthy weight and don't worry about extra rations. Until that happens, do I pack more, just to survive?