I was searching google to find out if my eyes have become puffy because of the my gym's salt water pool that I swim in.
My eyes were never puffy when I awoke on mornings. But now they are. I suspect the pool. I eat no salt and before this, I experienced no swelling anywhere in my body. Not my ankles, feet, or face.
My gym switched to a salt pool. And I noticed in the sauna, that my sweat tasted just like the pool water. And it was a salty taste. Before, my sweat had no salty taste because I eat no salt. I haven't in years. So I suspected that I must be absorbing the water through my skin, because I am not drinking the pool water.
Secondly, I fast much of my days. I drink perhaps two gallons of juice daily. That's why I eat no salt, so I won't swell (I am a fruitarian, anyway, so this is not hard to do). And because before I was a fruitarian, when I ate a lot of salt, my ankles seemed to sprain more easily and my knees seemed stiffer.
So when I began awaking with puffy eyes, I could only suspect the pool's water.