Today I went for my Long Slow Run, a 10k route that’s fairly hilly and that seems to be mostly uphill. I was not too worried about my time but concentrated on trying to maintain a steady pace, which I did well for the first 6k but was a bit more erratic on the last 4k.
However, the most noteworthy thing happened about an hour after my return home. I had showered, drunk some water and tea and was sat checking emails when I became extremely nauseous. This lasted quite a while and only eased when I lay down.
I have never experienced this before and it may not even be related to the run. Has anyone else experienced this kind of nausea?