(My utterly uninformed knee-jerk reaction here, but even if I was a true believer I don't think I'd reach for "compelling".)
if you add random rolls, you get a gaussian, thanks central limit theorem.
if you sum them, you get a lognormal distribution, which approximates a power law up to a cutoff
So many reasons: absorb information faster; improve spatial visualization; motivation, intrinsic motivation hacking ; simulations...etc
Give me the code to my brain and let me edit it, with version control please :D
Make it simple. Stare at a clock with a big second hand. Take one breath every 15 seconds. Then, after a minute or so, push it out to 20 seconds, then one every 30 seconds.
For the 30, my pattern tends to stabilize on inhale for 5-7, hold for 5-7, and then a slow exhale. I find that after the first exhale, if I give a little push I can get more air out of my lungs.
Do this once a day, 7-10 minutes session, for a week, and see if things aren't a little different.