Which describes how the talk test is used to check exercise intensity? A. If you can talk while exercising, your exercise level is not intense enough.
B. If you cannot talk while exercising, your exercise level is too intense.
C. If you can talk before exercising, your warm-up should be more intense.
D. If you cannot talk after exercising, your exercise level is not intense enough.

NEED IT FASTTT PLEASE HELP !

Based on the question above, the answer is B If you cannot talk while exercising, your exercise level is too intense.

The level of intensity of the exercise is dependent on your ability to talk. If you can talk comfortably while doing exercise, then, it is normal but when you can't, then the intensity of the exercise is too high.

Imagine talking while running, you will observe that it is not easy.

what effect does exercise have on the nervous system?

the answer is c.