As the world's biggest star, and a footballer hailed by countless people as the greatest ever, Su Dong's entire career had been called a textbook of scientific training.
Every day, countless media reporters, football professionals, and fans followed Su Dong's every move, including what he ate, drank, excreted, and when he slept.
Because of Su Dong, his four personal coaches had all become authorities in their respective fields.
There was no need to mention Nuno Cruz. He was an expert in sports analysis. The Italian Vito Scala had become a top personal trainer whom every professional player dreamed of working with, while the Englishman Grant Downing had become one of the world's foremost experts in sports rehabilitation and physiotherapy.
Even the least famous and least-followed of them, nutritionist Paulo Lacassco, had become a leading figure in sports nutrition. His courses at Lisbon University were especially popular among nutritionists all over the world.
Over the past few years, Su Dong's rise had driven the rapid development of sports science. Universities in particular had begun paying it unprecedented attention, increasing research investment and facilitating ever more frequent exchanges. The entire industry had developed at remarkable speed.
By then, almost every team in the top leagues had several nutritionists on staff. Sports rehabilitation and physiotherapy had received unprecedented attention, while sports analysis and big-data statistics had become hot fields that every club eagerly pursued.
These practices were not only widespread in the First Team. They had even begun making their way into the Youth Team.
Precisely because of the industry's rapid development and scientific research, many old ideas had undergone major changes.
The simplest example was diet.
Many foods that had once been strictly forbidden were gradually being allowed.
For example, Paulo Lacassco accepted Su Dong eating rice. He had discovered that, as