Vyvanse. I got a dry mouth even before starting to sweat. Drank a Gatorade and felt better. Milk never helped, I guess because it takes way longer to digest.

Dissolving a bit of salt in my glass of water seemed to have a positive effect sort of like Gatorade did, so I get interested. I look into electrolytes, rehydration salts and stuff, and I'm having trouble understanding these supplements. Some products make more sense than others, some seem fine, others I just don't understand. I was at a "sport nutrition" supplement store today and there was an isotonic powder which had no sodium, just K Mg and... Calcium?? The most important mineral to replenish is sodium, it's the one we deplete the most AND it's one of the most depleted relative to daily intake!.. while calcium is barely excreted through sweat and whatever is lost is insignificant in relation to daily intake. Magnesium too, there's so much magnesium when we seem to lose only a small part relative to intake. I understand we could all use some extra Mg but this is a rehydrating supp not daily nutrients supply. Potassium seems over overrepresented as well if I look at how much is lost relative to intake...

I wanna know why doesn't this make sense to me, I must be missing something.

Btw: to make my own rehydration drink I can just choose the electrolytes I wish to replenish, mix with appropiate H20 amount and voilá..? I'll add a bit of sugar/honey if I'll need the energy. Do I need to consider how different mineral formulations interact with each other? How they may influence the drink's overall absorption when it's being digested & absorbed? hypotonic better than isotonic for hydration while isotonic beats hypotonic when it's about energy replenishing.. correct?

Btw several brands using Mg Oxide? Lol