On the issue of fitness, if you want everyone to achieve the best results, then you need to tailor courses for everyone, which is obviously impossible for the operating agencies and coaches to guarantee time and energy.
But the advantage of the gym is that everyone who comes to the gym has the same purpose, which is nothing more than shaping, losing weight, gaining muscle and so on. Therefore, according to everyone's basic physical condition, gyms and coaches only need to make some menu options.
The so-called private teaching class is to arrange menu combinations for everyone. This reduces the difficulty of coaching teaching and even coaching training.
So the so-called personalized customization of the gym is actually similar to the large-scale personal tailor of IKEA, which makes people feel personalized and standardized.