Very interesting. I've felt this as well. Even bottled flat water, doesn't seem to hydrate me as well as a carbonated mineral water (e.g. Perrier or Pellegrino)

Very interesting. I've felt this as well. Even bottled flat water, doesn't seem to hydrate me as well as a carbonated mineral water (e.g. Perrier or Pellegrino). I wonder if this is placebo or if there is some other meaningful effect happening.