The respiratory exchange ratio (RER)is a way of determining the body's metabolism of ____.

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The respiratory exchange ratio (RER) measures the ratio of carbon dioxide produced to oxygen consumed during metabolism. This helps to determine which fuel source the body is predominantly using for energy. A RER value of 1 indicates that only carbohydrates are being used, while a value of 0.7 indicates that only fats are being used. Therefore, the RER can help determine the body's metabolism of carbohydrates and fats.

The Respiratory Exchange Ratio (RER)is a Way of Determining the Body's