By now, most people are familiar with Discovery Channel's hit show "Naked and Afraid". Eachweek, a new pair of total strangers are faced with the ultimate survival challenge: survive for 21 days together with no clothes or supplies in some of the most dangerous environments in the world. In addition to securing shelter and fire, they must find drinkable water and food to survive. It is not a challenge to be taken lightly. If the survivalists feel they can no longer go on, they may "tap out" and be taken out of the challenge.