breath work skeptic turns partial believer

tried box breathing (4-4-4-4) daily for 6 weeks because my therapist kept bringing it up. i did it condescendingly. 2 min before bed and 2 min before hard meetings. HRV objectively improved on my wearable. i also noticed i reacted less sharply in a couple of stressful work calls. wouldn't have believed it if my own data hadn't changed.