FYI, Dan Gardner refers to this as the "rule of typical things." Something rare happens right now, and it seems incredibly likely that it's going to happen again right now.

However, statistically speaking hyponatremia is very rare, even in the very hot Texan environment.

Equally important is that the solution to this very rare problem is not to use sport drinks and nearly worthless electrolyte tabs.

The solution is to listen to your body, not panic over slight dehydration, and to only drink when you're thirsty.