I enjoy taking showers spanning multiple hours, and have noticed that I never get thirsty when in there. Clearly, sufficient amounts of water must be absorbed through the skin.

Is this principle applicable when going /out/?

Consider having an insulated water tank (a thermos, like one you keep coffee in) attached to each of your boots. The water would be body temperature so would not make you freeze, and it would also ensure you get hydrated enough when you're on long hikes. Drinking from a bottle would literally become unnecessary.


To make a simple implementation you could use one of those sport flasks with straws. Cut a hole in the boot, make the straw poke at the sole, and then fill the bottle. If the opening of the flask is fixed at the same height as the surface level, laws of physics will keep the water from overfilling