Patrick Dempsey · September 3, 2026 · 6 min read
The video is live today — what happens to heat tolerance as we age, and why the warning signals themselves get harder to hear. SEE IT HERE.
It ends by sending you back here, because the protocol didn't belong on camera. It belongs somewhere you can read it twice.
The short version of what the video argues: three separate things change with age — thirst, the fluid buffer your body builds in response to heat, and when sweating starts — and being fit does not fix any of them. What follows is what you do about it.
Below: the protocol, what it does and doesn't do at our age, and where to stop.