If you drink something, don’t its contents get into your blood stream much more quickly than if those ingredients are in food, which has to be digested first?
Kool-Aid, with its electrolytes, is a good remedy for the nausea of being exposed to a little too much sun. A useful tip.
The advantage to drinking straight water is that it doesn’t have to carry impurities with it as it goes through your system. Coffee, cola, beer-a good amount of the fluid intake is used transporting the toxins while straight water can pick up and remove impurities from your system as it goes its water out of your body.
This is something where an experiment could be useful. A week of drinking plain, prerferably distilled water and cutting out caffeine. You'd have a headache for a day from the caffeine withdrawal but see if you feel noticeably more clear and fresh a week later.