Which famous people use State breathwork app?

Chris Williamson

Chris said he does breathwork in the mornings using Brian Mackenzie's State app.

“I will do some breathwork using State app, which you might be familiar with, Brian Mackenzie's thing.”Chris Williamson

Source: Morning Fitness, Optimizing Hydration, Screentime Management, Sleep Tips, Cognitive Biases & Other Uber-Helpful Life Hacks With Modern Wisdom's Chris Williamson (Ben Greenfield Life transcript) (podcast, 5 May 2022)