Choose and explain one the five physiological reasons for lactic acid production and find another credible resource that adds to the content

Lactic acid accumulation is a painful byproduct of intense exercise. Choose and explain one the five physiological reasons for lactic acid production and find another credible resource that adds to the content. Discuss what can be done to mitigate your chosen physiological response, if anything.
Feel free to choose any one of the five that I mentioned in the word document.