Question

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigues. Which is the best explanation for what has occurred?

Answer 1

Step-by-step explanation:

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigues, the cause of the fatigue is because of the production of lactic acid in the muscles produced as a metabolite from the process of cellular respiration.

Answer 2

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigues, the cause of the fatigue is because of the production of lactic acid in the muscles produced as a metabolite from the process of cellular respiration.