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Impulse Athletic Coaching
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http://www.diabetes.org/diabetes-research/summaries/lee-caffeine.jsp

"The researchers found that, in all groups, taking a pill with the same amount of caffeine as 2-3 cups of coffee resulted in a significant decrease in glucose uptake, which caused a rise in blood glucose levels. After exercise, glucose uptake was slightly better, but eating or drinking caffeine was still linked with a significant decline in glucose uptake.

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Caffeine is linked with a decline in the body's ability to turn glucose into energy, regardless of exercise, obesity, or type 2 diabetes."


Could there be a link between that and a decline in cycling performance? Other reports speak of less muscle pain because of caffeine. So what is it?

Also, how much caffeine is illegal/doping and how can you tell what your body's limit is?
 

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Isn't there a thread with pretty much this title about 3 spots down from this one?
The best way to know your limits or how something affects your body is to try it. How can I tell you if drinking coffee makes you feel less pain or affects your performace?
 
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