For the body to maintain a moderate level of steady exercise:

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Quizplus · Accepted Answer

During moderate exercise, the body primarily uses aerobic metabolism, which requires oxygen to generate energy. This means sufficient oxygen must be available to the cells in order to maintain a moderate level of steady exercise. While fat stores may provide energy during exercise, it is not the sole factor determining one's ability to maintain moderate exercise. Additionally, the body can metabolize carbohydrates as well as amino acids, but again, these processes still require oxygen to generate energy. Anaerobic metabolism is used during high-intensity exercise and is not necessary for maintaining a moderate level of steady exercise.

For the Body to Maintain a Moderate Level of Steady