Answer:
The practice of sports should be done to stimulate benefits in the body and therefore it should, with some exceptions, be practiced frequently and with an intensity that gradually increases.
Explanation:
The introduction of the sentence presents the reason why the practice of sports should be encouraged in an individual's life. Right after the introduction, an interruption is made through the "with some exceptions" part, which is separated from the main part of the sentence by commas.
The interruption is a sentence, or a word, that interrupts the flow of thought that the sentence was establishing. In the case of the question above, the interruption shows that there are exceptions to the duty to exercise frequently.
