The volume of a human is about 66 litres and each day we consume about 3.2 litres [1][2]. That’s 4.8% of the average body volume. The same as the volume of both of your hands, plus your lungs, brain, heart and bladder [3][4]!
Like all organisms, your body is part of the water cycle, a temporary reservoir where water is stored and used before being released as pee, poop, sweat, period blood, etc. When we realize humans are part of the water cycle, we see that not having access to clean water is equivalent to not having access to your own body. We see that polluting water is poisoning ourselves.
Earth’s water connects all of its organisms, as water flows out of one of us, and into another. That makes peeing a sacred act connecting you to the Earth. The water that’s now part of your body was once ocean, once rain, maybe a mushroom, a woolly mammoth, your great great grandmother, or an iceberg. Likewise, the water in the clouds and the ocean is a pool of latent body, with the potential to become part of you or any other organism.
[1] https://bionumbers.hms.harvard.edu/bionumber.aspx?s=n&v=3&id=109718
[3] https://doi.org/10.1177/154193128603000417
[4] https://bionumbers.hms.harvard.edu/bionumber.aspx?s=n&v=2&id=109719