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Let`s just say you are hiking in the middle of nowhere and suddenly became lost. In your bag is a ham sandwich with 150 calories that will go bad by the end of the day. If you really are in a bind, the Datrex 3600 food bars aim to cram as many calories in as small a package and do not provoke thirst. Each of the Datrex 3600 will provide 3,600 calories of sustenance. Thats about enough for one days worth of walking through a forest, looking for help, though of course youll also need water. They have a 5 year shelf life and are around $8 each. You hear these stories of people being stuck in their cars for days because of snowstorms, or hiking on a trail and becoming injured and aren`t found for days. If you live in a environment where snowstorms are common or if you do a lot of outdoor activities on your own, it might be worth investing in a couple of these and stashing them in your car and backpack.
Image Source: http://www.ohgizmo.com/2012/11/05/datrex-3600-food-bars-can-save-your-life-when-stranded-in-the-wild/