Hi, may I answer your health queries right now ? Please type your query here...I am a marathon/half marathon runner. In Nov 2009 after finishing my first full marathon I experienced all symptoms of stage 2 hypothermia. This was about 4 hours after the race. My temp was 94.7 and I was taking a nap at the time. Temps outside on race day was 60 degrees F. As of a week ago I ran a 20 mile training run on a treadmill and upon finishing I was acutely aware that I had stopped sweating and was cold. My temp when I returned home was 94.1. The first time symptoms were so severe I went to the ER and all tests were normal. I hydrate well at all times also.