Cross post from road....
I was out Tuesday, 95 *, dripping sweat for the first 18 or so miles, suddenly .... I wasn't sweating, and damn it's cold - I got goose bumps ! (no I didn't fall into a lake, I wish!).
I had taken 2 electrolyte caps pre ride and had drunk about 2 quarts of water during the ride.
Weather changed from 60's and rainy the past 2 months to 95* and sunny - no real time to acclimate.
Dumped water on my head, sat in the shade for a while, and took it easy going home. Didn't feel too great Weds, but ready to go out tonight - helps it's 80's today !!!