It is a fact that without water in severe conditions, you could last less than 24 hours, but may last as long as 3 or 4 days. Food depends on your body type, of course. Generally, heavier people last longer - assuming that they store more water - than most people can go for at least a week without food though. However, will Mark learn to survive on his own in the desert, or is his life suddenly faced against life or death? The Transall Saga is a speculative/science fiction written by Gary Paulsen. When Mark goes out on a hiking trip in the desert, he is enclosed in an abnormal blue light and transported to what appears to be another world. He's injured in the tribulation, and must recover while trying to stay alive. Once he's well enough to move around more freely, he makes discoveries, namely monkey-like creatures and fruit, as well as evidence of people. One day, he is seized and imprisoned by a group of indigenous people. As time…