The thing about drinking a healthy amount of water is that you pee. A lot. So in the angle of increasing productivity, can we say that the long-term healthy benefit in increase productivity outweighs theyime it takes for 20 pee breaks?

It is inefficient and decreases productivity short term but helps in overall productivity long term.
Say you take 5 minutes minimum (3 mins to take off pants and pee, 2 minutes washing hands) per pee break. You’d think its only 100 minutes (assuming you pee min. 10 times a day)

This is assuming you have a big bladder. BUT you lose, if you bring in the human factor - the 2 minutes before you debate on how important it is to pee now vs later bc you are working on something and hate the interruption. 2 mins pre-pee , ten times (that’s 20 mins)

Then you finish and come back to your work and again assuming you are human and need about 25 minutes to re-focus according to a study examining the nature of fragmented work (Mark,Gonzalez,Harris ,2005). Multiply that with 10, again assuming you have a big bladder. (Lucky you)

This the math , ceteris paribus (meaning minus any phone distraction, smoke breaks if you do, meal breaks, snack breaks, general boredom - anything else fragmenting your focus):
You lose
50 + 20 + 250 = 320 minutes
320/60 = 5.3 hours

Just drinking water.
You work 8 hours.

I finished peeing when I started to write this. Now I have to pee again - just as I finish writing this thread.

I would probably spend a whole working days’ worth of hours in peeing bc of my tiny bladder.