I hadn't seen this addressed elsewhere in Paleo readings so thought I should ask here - has anyone read any studies or anything else on the Paleo approach to water use? That is, are humans really adapted to drink a relative lot of fluid - water for instance - all the time. Or did hunting and gathering periods naturally mean that water intake was more sporadic?

(Wondering what metabolic cues might be given in a Paleo sense from either water abundance or relative - minor - restriction at times.)