It turns out that Zhong Nanshan paid special attention to fitness and recommended swimming, pointing out that swimming has two major benefits, one is to reduce joint load, and the other is to exercise the heart. Zhong Nanshan himself is a swimmer. Even on busy days, he will go swimming for a week or two.
Swimming is a lonely sport.
Set a goal silently in your mind, and strive to complete your goal in the alternation of floating, sinking, sucking and moving. In front of me is a piece of Wang Yang, and in my ear is the sound of my breathing and my body paddling. All the spirits are concentrated on yourself, completely immersed in your own world, and you don't have to care if someone has surpassed you and just wants to achieve your goals.