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A boxer has been jumping rope for an hour. His leg muscles are burning, and he feels weak. Which substance is the most likely cause of the burning he feels in his muscles?
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A boxer has been jumping rope for an hour. His leg muscles are burning, and he feels weak. Which substance is the most likely cause of the burning he feels in his muscles?

User Jwall
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2 Answers

4 votes
Lactic acid due to lactic acid fermentation.
User Amy M
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2 votes
The lactic acid that is building up in his muscles will eventually cause him to stop exercising. The burning sensation comes from the build up of that lactic acid in his muscles.

User Suge
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8.0k points
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