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Has anyone seen white dots in their vision during a race?
This happened to me during a hilly marathon distance run-bike-run. I also started feeling a bit lightheaded and extremely fatigued but carried on hard because I only had half a mile to go, plus I had just overtaken someone back and of course it was unacceptable for them to pass me a 2nd time!
I recovered quite quickly after the race, but does anyone know what this is? Or how I could prevent it from happening again?