Or after practice, some people will feel dizzy due to lack of oxygen. Just keep exercising.
Taiji preach, practicing the mind method. When practicing, you should be calm and not impatient. Don't be too attached to some external things, relax and move around at will. At first, as long as the movements are integrated into the body, the later exercises are meaningful. So many people who practice boxing will feel comfortable after practicing kung fu.
Going to the gym is a modern fashion. In order to build a good figure, everyone needs to master scientific methods. So? Come and have a look with me.