Eighteen years of teaching Buteyko breathing left me with a question. Early on I taught the strongest version of the method. It provided the best results, but many people found it too intense to sustain long-term. I adapted the approach to give people more control over their own intensity and encouraged lower intensity for better long-term results. But the question stayed open: if the strongest version works best, is there a way to make it easier to do and easier to teach?

Over the last ten years, I took an increasingly experimental attitude to the practice. I was particularly interested in ways that allow effective training while measuring how the training impacts body and mind. Achieving this required changes to the exercises that went beyond the Buteyko framework and were inspired by pranayama and Tummo.

That also required a new app: new exercise flows, a wider selection of variants, a walking version, and sensor-free stress detection that finds the right intensity for you. Zones show your position in real time and tell you whether a breath-hold was right or too strong. Relaxation is at the center of the design, because the deeper you relax, the better you perform.