Sutra 2.50 regulates the breath by place, time and number. It never gives you a number. Every slow-breathing trial I could find tests a fixed count instead — so the version the text actually describes has not been tested. Ten minutes a day, two weeks, log your own count. That’s the experiment nobody has run.
What it says
You’ve done four-seven-eight breathing, and Patañjali never wrote a single count down.
Sutra 2.50 defines prāṇāyāma, breath regulation, by place, time and number — deśa, kāla, saṅkhyā.
Not a fixed count off an app — a calibration you adjust each time you sit.
On the Evidence Desk I found no trial testing that version — they all test fixed counts.
So the most-studied breathing technique on earth isn’t the one the text describes.
Run it as written: ten minutes a day for two weeks, logging your own count.
That’s the Evidence Desk, where the practice and the trial get graded separately. Subscribe if you want the ones that don’t survive it too.
Sources
Yoga Sutras 2.50
Watch more on YouTube: @chittalab.
Narration and illustrations are AI-generated. Every claim is sourced above.
