If you want your mind to be blown away, this documentary is your best bet. This boy, Ram Bahadur Bomjon, in India was claimed to be able to survive without any food and water for months, a team from the discovery channel went and investigate. Let me give you a heads-up, no they didn't take the boy away and analyzed him. BUT in the later parts of the documentary, another man claimed that he could survive without any food and water. So they locked him up and monitored him 24/7 for 10 straight days without ANY food and water. Without spoiling everything in the documentary, let's just say that he didn't die.
Watch these vids and have your mind blown away.
Ram Bahadur Bomjon's messages to the world
News article about the boy gone missing '06
News article about the boy reappearing '06 (He was distracted by the crowd so he went deep into the woods)
News article about the boy reappearing again '08 (He denied to be a reincarnation of Buddha so ignore what others call him)
News article of the man who spent 10 days under constant observation without food and water