D'oh. Wound up hyponatremic again last week, then dehydrated, then undernourished because of the nausea at a time in my training when I REALLY didn't need that. You'd think I'd have learned by now.

I realized that the FIRST early sign, that I tend to ignore because it can have other causes, is excessive urination, especially with urgency and especially when I know my fluid intake hasn't changed. Just the body trying to concentrate sodium in the blood by throwing off water. I'm going to try to pay closer attention to that one from now on.

I just constantly get seduced by the media drumbeat about how Salt Is Evil, and wind up not listening to my own body's needs. Even though sodium is a critical element that we CAN'T get enough of from plant and animal foods, and for 95% of human history, civilization depended on reliable sources of salt, either by mining, natural eruptions or evaporating seawater. (It still does ... it's just that collection and distribution networks have become so efficient that access to salt is easy for almost everyone in the modern world.)

Dangitall.