People aren't good at hydration, at least I wasn't, so at the risk of self promotion I have an iphone app called Max Hydrate - https://apps.apple.com/us/app/max

People aren't good at hydration, at least I wasn't, so at the risk of self promotion I have an iphone app called Max Hydrate - https://apps.apple.com/us/app/max-hydrate/id1575744883#?platform=iphone https://apps.apple.com/us/app/max-hydrate/id1575744883#?plat... - that calculates how much you should drink to stay hydrated. It's based on research and the most important parts are free. I had thought about it mostly for working out and athletes, but perhaps in warmer temps it has more general applicability. I've learned older people often suffer from dehydration without realizing it. It has a WUT test to test for dehydration and uses your sweat profile to suggest hydration products. There are a lot of options these days beyond Gatorade and Pedialyte. Most people don't get enough salt, so that's something to watch out for, especially if you are a salty sweater.