Respuesta :

Answer:

Circuit training is primarily a resistance-training workout. In contrast, interval training is a cardio workout.

Explanation:

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Answer:

Program Structure

Circuit training is primarily a resistance-training workout. ... In contrast, interval training is a cardio workout. You choose your aerobic exercise -- swimming, running, cycling or rowing, for example, and perform intervals of high-intensity effort alternated with periods of recovery.

Explanation: