I normally train at 4am in 50-55 degree weather however this past weekend I raced in a different area with 80 degree weather. I didn't change anything in my pre-race warm up. However, I could feel that I my breathing was a bit off during the race and I was struggling. I ended up pulling out of the race in the last three laps, unable to latch on after a crash(not met). The race was pretty fast however I don't beleve this was the cause of my DNF. I was coughing for hours after the race.
Just wondering if others have experienced the same. After this experience, I plan on training in the afternoon in warmer weather.