Breathing still needs control. Breathing control is to control the rhythm. I usually choose two breaths and two breaths, that is, two breaths and then two breaths. The rhythm and rhythm of breathing are the same. Two steps, two steps, two more steps. If you listen to music with headphones, you can download a metronome software, which is a kind of piano. Set it to 160- 180 times per minute, depending on your situation and people. The rhythm of breathing follows the beat, and the frequency of the rhythm is fixed for a long time. As long as you control the rhythm, you want to control it.
Breathing does not require deliberate attention. When you are born, you will breathe. You won't forget (or get it wrong) how to breathe, because you start running. Although some studies have introduced the rhythm of "rhythmic breathing", which is conducive to improving running performance, for ordinary bodybuilders, the difference is not great. Some people think that it is running to catch breath and that the breathing method is wrong. In fact, I just don't exercise for a long time, and my cardiopulmonary function can't keep up with the intensity of exercise. Too much running.