It's life advice. Fitness can change the trajectory and ideal of life, which is very important, so be careful and don't recommend it easily.

Fitness is only what you want, even if you persuade, you may not be able to persist for two or three days. Fitness is good for your health. But now most people are busy with work and life, so they may not stick to fitness as recommended.

Unless it is out of certain requirements, and it can be better achieved through fitness, such as losing weight for someone, changing health status for making yourself better, and so on. Otherwise, relying on other people's advice, it is difficult for a person to really embark on the road of fitness.