[quote]Bill Roberts wrote:
If having a substantial protein intake, “colorless” urine may be an unreasonable goal. But dark is bad.
The amount of water needed will vary with protein intake and amount sweated.
Although some say not to do so, it’s reasonable for the purpose of evaluating hydration to consider all beverages which are principally water towards the volume of water.
(As an illustration, it makes no sense that a liter of water taken as water, and a teaspoon or tablespoon of powder taken as powder count as a liter, but if the powder is dissolved in the water then it counts as nothing. Instead, either way it’s a liter of water.)
Personally, not counting water drunk from the water cooler in the gym, which would be at least a couple extra quarts, I drink about a gallon and a half to two gallons a day. But another person could do well with less if consuming less protein and/or sweating less.
In the gym I probably get from the water cooler a pint every 15 minutes if sweating heavily, or per half hour if more lightly.
On the artificial sweetener question: It’s demonstrated that in rats, at least, artificial sweetener wrecks (scientific term there) the rats’ ability to regulate food intake according to caloric content. Rats not exposed to artificial sweetener can apparently, presumably from taste and mouth feel, judge the energy content of what they are eating and thus as foods have more or less energy, correspondingly eat more or less. Rather than having to get fat first to discover they are eating too much, or having to suffer a sugar rush, they can tell as they are eating how much is appropriate.
But this ability is lost in rats exposed to artificial sweetener.
It is supposed that the body has an instinctive “program,” so to speak, from which it expects a given energy input will result, in time, from a given meal based on the taste of that meal. But when this expectation is proven false again and again – meals taste as if they should be high calorie, the body produces insulin in anticipation of this, but then much less sugar than expected reaches the bloodstream – the body throws that out the window and starts assuming meals may have much less calories than they actually do.
So these rats do not regulate their food intake properly and tend to get fat.
The same may be true in man. I don’t know if it’s been demonstrated in man to the extent it has in rats.
Alright, thanks for that. It seems most people with a protein laden diet go for around a gallon-2gallons per day.
In regard to the artificial sweetener- Is there a site that you learned that, or is it just knowledge that you knew? (If there is some site, can you link it. I would appreciate reading up more on the topic so I can possibly help other people with it if needed.)