It is said that the most important thing in fitness is sleeping and eating. What are the measurable standards?

The standard of measurement is that you should be able to sleep, eat and sleep, which means that your daily schedule should be guaranteed, and you must sleep no less than 8 or 9 hours every day. You should form the good habit of going to bed early and getting up early. This is called sleeping. To be able to eat is to eat healthy things, foods that are beneficial to fitness, and foods that undermine fitness effects.