Final answer:
The talk test is a method to gauge exercise intensity; you should be able to speak during moderate activity, but only say a few words without pausing during vigorous exercise.
Step-by-step explanation:
The talk test is a simple method to monitor the intensity of a workout. When engaging in moderate-intensity aerobic activity, an individual should be able to talk, but not sing. This level of exertion allows for conversation, albeit perhaps with some difficulty. On the other hand, during vigorous-intensity activity, one should only be able to say a few words before needing to pause for breath. This indicates a higher level of intensity where speaking in full sentences becomes challenging.
Utilizing the talk test can be an effective way to gauge whether you're exercising within the intended intensity zone without needing specialized equipment. For those looking to improve cardiovascular fitness or burn calories, adjusting workouts according to the ability to talk can help in achieving their fitness goals efficiently.