I found out about a Canadian man from Toronto who had been lost for about half a decade in 2012 a man was lost in a jungle in Brazil and has been found 5 years later he was found in a motorway in Brazil then he was arrested. Nobody knew who he was so they took him to the hospital but he escaped and was lost but he was found 3 January 2017. It never said how he survived so I’m guessing he had many ways