For an athlete exercising at a moderate intensity, fat use as a fuel is limited until the athlete has been working out for at least ____ minutes.

Name: For an athlete exercising at a moderate intensity, fat use as a fuel is limited until the athlete has been working out for at least ____ minutes.
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During moderate-intensity exercise, the body initially uses glycogen stores for energy. It typically takes about 20 minutes for the body to start significantly utilizing fat as a fuel source.

For an Athlete Exercising at a Moderate Intensity, Fat Use