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I was just wondering if anyone has experienced this? On three occasions now I've either collapsed, or nearly collapsed when running. This all started in November last year. Once was at the end of a half-marathon. in full flight heading towards the finish line - this was pretty much full collapse. I was running as hard as I could at the time - luckily someone caught me before I hit the ground.
Once it's happened at the end of a 10k race, just when I'd stopped - again, I'd been giving it my all and just when I crossed the finish line I couldn't stand up, was really dizzy and the steward told me I was really pale (I'm normally bright red when I run!). I recovered within a few minutes.
The other time was in the middle of a marathon - I'd been feeling sick and a bit dizzy from about half way and again became really pale and very dizzy about mile 15. I had had plenty of water during the marathon and I run with a Camelbak with electrolyte solution so I don't think it was dehydration. I had to stop for a while, then recovered enough to walk/jog on until the end.
I'm becoming a bit wary of really going for it in a race in case I do end up fainting and hurting myself. I had blood tests done in December which showed I had low iron but this has been corrected and the latter two episodes have happened since then. I know I'm not diabetic.
Do you think I'm just running beyond my ability? I'm not a fast runner by any means - the half marathon I nearly killed myself doing was going to be just under 2h. Is it possible just to push too hard?
I know I should probably see a doctor but if this is a fairly common thing I won't waste their time.
Thanks in advance