The metabolic event that best explains the situation whereby there is a burning sensation in the working muscles is lactic acid fermentation.
Lactic acid fermentation is the process whereby sugar is converted to lactic acid in the presence of certain enzyme.
According to this question, certain athletic training routines is usually accompanied by a burning sensation in the working muscles and a drop of pH in the muscle tissue.
This is caused by the low supply of oxygen to the muscle cells, hence, they switch to anaerobic respiration (lactic acid fermentation) that causes the synthesis and buildup of lactic acid in the muscle.
Learn more about lactic acid fermentation at: https://brainly.com/question/11502989
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