We've already seen so many movies where the main heroes get lost or face a catastrophe which forces them to survive in the wild that it looks like we can do the same stuff easily and without any prior preparation. But if only film producers were a bit interested in food and uninhabited territories, they would have known those ones have very little in common with what they usually show in their movies. So if by any chance you're still pursuing a chance of living in the jungle or so - watch this video first!