Show HN: I'm a doctor and made a responsive breathing app for stress and anxiety
I can&#x27;t test your app, since I don&#x27;t have an iPhone, but I&#x27;m hoping you could answer a vaguely related question for me.<p>One of my COVID readings was <i>Breath: The New Science of a Lost Art</i>, by James Nestor. Its author says, &quot;humans have lost the ability to breathe correctly&quot;. Like your app, it proposes a lot of breathing exercises. It explains their benefits in terms of increasing CO2 tolerance, and believes that we&#x27;ve all got too much O2 in our systems.<p>That smells like horse puckey to me, but I&#x27;ve been unable to find an informed review either way. I&#x27;m sure that slow, deep breathing as a focus for meditation is a very good thing, and I&#x27;m sure that your particular app is well founded. But I&#x27;m curious to know if you&#x27;ve read that particular book, and what your opinions are.<p>Thanks!