The image you see at the beginning of this video was created by Ernesto, an artist from Spain who took the Buteyko Breathing Normalization Training course with Sasha Yakovleva. It shows an (imaginary) frustration Sasha experienced while helping him to learn how to control his asthma naturally. It was not easy!
It did not take him long to switch from mouth-breathing to nose-breathing, but he still experienced severe congestion and breathlessness. The Buteyko method helped him eliminate the fear of suffocation and experience a symptom-free state. Even though during his two-month-long course, it was only periodic, it gave Ernesto a glimpse at the new asthma-free reality, which the Buteyko method makes possible.
Now, when his nose gets blocked, he knows how to open it up right away. It is not a big deal anymore. Listen to Ernesto as he explains what he does when he experiences mild breathing difficulties.