Watch Discovery's all new reality series "Naked And Afraid XL" Premiering Sunday, July 12 A group of the best survival experts in the world are taking on an un-survivable situation that has never been attempted before: 12 people. 40 days. 40 nights. No food. No water. No clothes. The ultimate trial of human endurance and will to survive. NAKED AND AFRAID XL is a 40 day challenge, making it exponentially more difficult than anything that's ever been tried in the past. Six women and six men, all extreme survivalists with their own expertise, find themselves stranded in a remote equatorial jungle of Colombia and this time, they will all be fighting for the same limited resources.