Until about 15 I regularly went to the physio to do breathing exercises. Believe me, that was so boring. That's why I stopped. Only later did I realize what the real use of these boring exercises was. Since then I go weekly to a specialized physio who does breathing exercises with me. This includes many breathing techniques, but also special positions of the body. The exercises bring great benefits and loosen a lot of mucus. When I have time, I inhale before. At home I do less breathing exercises. I use PEP, which is also an exercise. I recommend that you also do breathing exercises with a physio. Believe me, even if it is not very exciting, it brings a lot. Even if you feel great, the exercises can prevent.