When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

one of the most common forms of pain or discomfort we feel during strenuous exercise is a burning sensation in our lungs or muscles that goes away shortly after we cease the activity. this is caused by a build-up of lactic acid.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

not only is it colder, it also becomes darker, less salty, and more dense.