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Why I bonked?(4 posts)

Why I bonked?montejr
Sep 3, 2002 12:21 PM
Well at least I think I bonked (I always hear about bonking but am not sure what it is. I think I found out). Sunday I rode my second century of the season (solo). I drank plenty of fluid and ate a lot but around mile 80 - 85 I completely lost it. I barely managed to make it home completing the century. When I got home I wanted to throw up but there was nothing. I was super dizzy and almost seeing double - couldn't sleep either. Yesterday was a really rough day at work and today I am still feeling pretty spent. Any thoughts on why my body had such a tough time doing this being that I have ridden centuries in the past without any problems?

cheers,
Michael
So what did you eat the day prior? (nm)Spoke Wrench
Sep 3, 2002 12:40 PM
My guessgrzy
Sep 3, 2002 1:22 PM
Your body couldn't access what was available. This could be b/c you went too hard or you put the wrong fuel in the tank. Essentially you have to train your body and learn the discipline to stay ahead. Some people get good at accessing their reserves and know to keep their output low enough so that it's totally sustainable. Others go at a higher rate and need to supplement with the right products. There is a lot of science in this lately and if you play around on the edge you have to expect that sometimes you're going to cross it by accident. Having things like GU, Cytomax, Powerbars and the like are very important, but knowing when to use them is even more critical. Often you can pop down the right stuff and bounce back fairly quickly, but if you dig a really deep hole you can be wasted for days. Feels like you're walking on the moon - it's a really cheap buzz with only positive side effects!

A true bonk leaves you pretty much useless - as in you can't really ride the bike or even ballance and you must stop. Going to exhaustion while similar is something different. A lot depends on stress level which is why a heart rate monitor is such a useful device if you're going to play near the edge. There are lots of variables, like sleep, heat, personal factors, route, etc., but the HRM takes all of this into account.
need more infoDougSloan
Sep 3, 2002 2:13 PM
I pretty much agree with the above, but we could be more help if you give us more info. Need to know exactly (to the extent you can) what you ate and drank before and during, how hard you were riding, and how hot/humid it was. Sounds more like dehydration, to me, rather than or in combination with sugar depletion. The dizziness and vomiting feeling are more symptomatic of dehydration and electrolyte loss, in my experience.

Doug