The shows are on Tuesdays at 10:00 EST. Like I said in my post, the more I watch them the more I like it. It look a little foolish at the begining but I grows on you.
Actually it is not that you cannot quit at anytime, what surprised me that the best qualified person, a young man that is an outdoor guide for fishing and hunting quit about the second or third day into the journey.
Also is a proof that sheer will power and not giving-in without trying harder could make the different between life and death.
If you have Comcast on Demand you can watch the shows anytime.
they are under World and News, Discovery Channel, Out of the Wild.
Thanks for the comments.