Reading Time: <1 minute For many years, I have been providing commentary and commentary on the theoretical explanation of the Long Breath Diet and approaches from a medical perspective at the request and request of Gentosha, Japanet Takata, and Ryosuke Miki. The novel idea and movement of combining breathing techniques with exercise was groundbreaking. Based on my research at Juntendo University School of Medicine, I have published books on breathing techniques, autonomic nerves, exercise, and lung activity with my boss, Professor Hiroyuki Kobayashi. 15 years ago, awareness of breathing techniques was still low, but since breathing techniques became a big hit with the manga Demon Slayer, attention has been drawn to breathing techniques in the world. Furthermore, due to the decline in respiratory function due to respiratory diseases caused by the COVID-XNUMX infection, attention has increased to the [Lung Activity] that we advocate, and we have been interviewed by many media outlets. I was in charge of all the theory and medical approach of Long Breath, but [Lung Activity] is an evolved exercise that makes the big hit Long Breath even easier, more effortless, can be performed by anyone, anytime, anywhere, and by adding a medical approach to stimulate the vagus nerve. The Lung Activity we advocate can be confidently recommended to everyone based on evidence, logic, and proven results.