Heat and Exhaustion

I started my 16-miler at 80 F, 75% humidity. What I did not realize that before i finished the temperature / heat index would grow to 95F/100F. Half a mile out from the finish, after already walking in the heat several times, the nausea, faintness, and muscle cramps informed me that I had heat exhaustion. Thank heavens my 100 oz. CamelBack had ensured that I was properly hydrated. This is a first for me, and I felt lousy for the rest of the day.

Be careful out there in that heat, folks. I'm just glad I was within half a mile of my car.