I gave San Pelligrino a try yesterday....drank a little more than one 750 ml bottle and about one bottle today. Feeling much better than yesterday. I'm not sure yet if the San Pelligrino is the reason and will try it out a bit longer, but I wanted to share that it seemed to help.
I usually drink 64-80 oz of water, but I think my electrolytes have been insufficient. I am pretty particular about my water not having a "taste," so I was unsure I could tolerate San Pelligrino. It's actually a nice addition and does not have the salty taste I was concerned about. It's especially good chilled with a lime wedge.
I am also going to try SaltStick caps after reading more about them.
Would be great to have these no-sugar options!