[jyl]

Suppose you are starting a long and hot hike through arid country. You have the necessary amount of water in a plastic jug. Is it better to:
1. Carry the water in the jug and drink it as you go
2. Drink all of the water and thus carry it along in your body
3. Drink most of it and leave just enough in the jug to wet your mouth during the hike?

Hey, this question has been bothering me.