 I did not think that I pushed it too hard. I was hydrated. I had no alcohol in my system for days before. And I was nearly to the point of having to go to the hospital, probably should have. The signs and symptoms come on really fast. It can take only 10 to 15 minutes for your body to go from a comfortable place to over 106 degrees. And that is where it's beyond uncomfortable and can be incredibly dangerous and get you to that heat stroke.