I have the same issue. I mostly only drink out of habit.

This year I aim to get more active, and bought a fancy water bottle a while ago which will hopefully help with staying hydrated.

Regarding your 'lightly salted' water, if you can source it easily enough I'd suggest you try some Pocari Sweat [1] for a workout type drink - it's an electrolyte replenisher. I got into it when we lived in the middle east (found it in cans for cheap) and since then I sometimes buy it in powdered form [2]. I really like the taste - lightly sweet/salt.

I'll try adding a bit of salt to my drinking water and see how it goes, thanks!

[1] https://www.otsuka.co.jp/en/nutraceutical/products/pocariswe...

[2] https://www.amazon.com/Otsuka-Pharmaceutical-Pocari-Sweat-Po...