It's been five years, I don't remember. Probably the official forum, some discord or twitter.

<3

Half of this issue remains in the game as of 1.28. Running and sprinting does affect hydration loss - but heat level still does not. This makes overheating (yellow heat symbol) only cause an annoying gasp and animation without actually having any gameplay significance whatsoever. On a server running summer temperatures this downplays the significance of managing what clothes you use and how to move in the heat to not lose hydration too fast. This needs to be addressed.