Our knowledge of human INDIVIDUAL metabolisms and CUSTOMS have improved since Lofty and Jonathon Higgins were seeing to it their squads were properly hydrated. People are just ( sometimes) intelligent sponges and at the start of a 'survival situation' may be drippping water or looking like a survival cracker.

I'm with Jeff. I carry a sleeping system rated for the arctic and lots of water in both internal and external canteens.

" Water is precious, sometimes more precious than gold."- Walter Huston in The Treasure of the Sierra Madre