The major factor leading to exhaustion during exercise is:

Question

Quizplus · Accepted Answer

Depletion of muscle glycogen is the major factor leading to exhaustion during exercise. This is because glycogen is the main source of energy for muscles during exercise, and when it runs out, the muscles cannot continue contracting efficiently. Lactic acid buildup can contribute to fatigue, but is not the primary factor. Iron-deficiency anemia and insufficient vitamin intake may contribute to fatigue, but are not the major factors leading to exhaustion during exercise. Depletion of muscle protein is also not the primary factor, as muscle protein is not a major source of energy during exercise.

The Major Factor Leading to Exhaustion During Exercise Is