Breath is basically a tiny, steady power plant right on your chest. We can think about capturing that CO₂ and using a micro‑electrolysis cell powered by body heat or even the slight pressure change in the lungs to make a little hydrogen burst. Or we could look at breathwork as a way to reduce metabolic waste, tightening the gas exchange so the oxygen you use turns into hydrogen more efficiently. So the two worlds meet in a micro‑scale, low‑energy hydrogen loop that lives in your own body.