The problem is that it's very easy to get distracted or engrossed in work and not register in your consciousness the signal of thirst.

yeah that's me, I have workrave going in the background at at my hourly reminders to get up and move, I'll grab some water and stretch my legs. Colleagues always offering coffee in the breakroom :)

Not sure about best pee color but I know for a fact that I am less hydrated because I don’t get thirsty often. I have to impose on myself to drink water otherwise I drink a glass of water a day.

There are known benefits to drinking at least 2L a day, which is hard for most people who don't make any effort to drink even when not thirsty

I can get quite dehydrated before I get thirsty. So now when I get a headache I drink a lot of water and it usually helps.

It is too late to drink when you feel thirsty.