When a marathon runner experiences the phenomenon known as "hitting the wall," what nutrient is most likely depleted?

Question

Quizplus · Accepted Answer

Hitting the wall in marathon running is usually caused by depletion of glucose. Glucose is a major source of energy for the body during aerobic activities such as running, and when glucose levels in the body are depleted, the body has to switch to burning fats, which is a less efficient process and can lead to fatigue and exhausted feeling.

When a Marathon Runner Experiences the Phenomenon Known as "Hitting