Hidden skills to survive thirst and hunger while on The Dusty Path? Acquired through dying?

I keep seeing vague mentions ("Slow Metabolism", "Desert Rat") that there are skills that help the player to survive in the wilderness / dusty road in such a way that you die of dehydration/starvation less.
So far I'm not sure if there is such a way. They seem to be called "Slow Metabolism" and "Desert Rat". Anyone have any clue what does it take for them to be acquired?
edit I'm not talking about stocking up with cured meat or getting a lot of water. They all run out, eventually.
edit to clarify, "vague mentions" seem to point to the code itself mentioning some skills like that. something about dying of thirst or of hunger?
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CONSCIOUSNESS AND PERSONALITY. From the Inevitably Dead to the Eternally Alive
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