[ars]

The body doesn't really have any way to retain [liquid] water without causing medical issues. There's no storage compartment except for fat that could be metabolized into water.

You can also store water, for a short time, mixed into fiber in food that was recently eaten.

[UI_at_80x24]

I'm not implying I have 'water pouches' or anything as silly. 1.5L of water in my stomach gets processed as quickly as my kidneys can manage. Thus I urinate out a large % of that liquid intake before use can be made of it.

Continually drinking small amounts doesn't overwhelm my stomach and therefore it feels like I urinate less, and 'retain' that water.

[OJFord]

But drunk more gradually thorugh the day, it is able to be 'retained'?

Asking in good faith, taken independently each of your comments make perfect sense to me!