Here are 3 old articles that helped me stop worrying about lactic acid. They are several years old though and may be outdated by later knowledge and research, so don’t take them as the final authority.
http://www.infosports.com/scor...r/images/lactic1.pdfhttp://www.infosports.com/scor...r/images/lactic2.pdfhttp://www.infosports.com/scor...r/images/lactic3.pdf