Analysts say if you have between 21 and 33 percent body fat, you're in extremely great shape.
Dressing up like Mystique? A great idea. Applying duck tape to your body to do it? A terrible idea.
Food Supply: Bring enough food packets to keep you going for a few days. American Red Cross sells some great ones that are small, but loaded with what your body needs. Not sure if they have any beer packets, though...
Self Heating Cushion: These heating devices react from your own body heat and do a great job. They make smaller varieties that can fit inside your clothing, so pack accordingly.