Yes it is true that a human can three weeks without food; what the people who write that either don't tell you or you haven't read that far is you still need food! Food provides calories, which in turn provide energy, which you will need to do the things you need to do to survive! Go without food for only a few days and as you expand energy without replacing it you will become indecisive, weak, and lack the drive you need to get you out of the situation your in. In the Discovery channel's 2 part program on the "Marine Corps Survival School" they didn't give each "Jarhead" an egg and a lone match. They were going up into a mountainous terrain in the dead of winter so each one was given one half of a days ration, (One "cold weather" MRE) and a live rabbit, which they had to kill ,skin, gut, disjoint, & cook. They were not allowed ANY matches or lighters as they all had to learn to start a fire using the "Bow & Drill" method 1st. Once they accomplished this task they were given the designation: "Master of Fire" along with a really nice flint & steel set in a cool leather pouch that they slid onto their belts. They all wore GI Issue Polypropolyne thermals, "Mickey Boots", and other "ECWCS" clothing and equipment, including the 3-piece Sleeping bag system. Please note: This is the Marine Corps; "Hard charging Devil Dogs"; as hard-core as your going to find anywhere, and they carried canteens, mess kits, knives, etc.. No one decided to head up into the mountains wearing nothing but a loin cloth and carrying a stone axe. They had to forage for food, and here's the important part...Their diet included not only the MRE and every edible part of that rabbit they were given, but fish and any other game they might scare up. There were no, or very little edible plants. It still was a hard-core class. Food is nessasary, and if you don't want to eat bugs and grass, learn to fish, trap, and hunt game, use a hand-made sling if you have to!:cool:

