First of all, we need to understand who said this sentence and why the coach advised you so much, because the coach can make money by doing exercises in the gym, or getting a fitness card, or taking private classes.

Running is the least profitable sport in the gym, because running can be run anywhere, and it doesn't have to be in the gym, even at home, outdoors, where you breathe fresh air.

Moreover, most people like to run outdoors, not only because the outdoor air is fresher and the outdoor environment is better, but also because it can exercise our physical endurance and not easily hurt our knees.

That's why I think when the fitness instructor suggested to you to minimize running and fitness, I think he had some selfishness to make more money.

Of course, because the fitness instructor is a professional, at this time, we have to think about what he said is the purpose. Running fitness is probably not as good as strength fitness. Sometimes we need some functions brought by strength fitness, a good way to strengthen muscles.

Leaving the gym in a big sweat may not necessarily achieve the purpose of exercise. Because incorrect running posture may cause injuries to knees and other parts of the body.

During the whole running process, it is very important to control the heart rate. Either it may make the heart and lung pressure too high, causing potential health threats, or it will not stimulate the heart and lungs and greatly reduce the running efficiency.

So sometimes we have to consider opinions comprehensively.