Yes, poor posture can impact your breathing. Poor posture can lead to poor diaphragm mobility and poor chest expansion. Reduced alveolar ventilation, which can lower your oxygen levels.
Capaldi Chiropractic
How The Breath Affects Your Chiropractic Adjustment - Vida Integrated Health
Poor Posture Affects You More Than You Know
How to fix my hunchback - Quora
Does Bad Posture Have You in a Slump? - Beecher Chiropractic : Houston, TX Chiropractor
Posture Shelburne VT - Wellspring Chiropractic Lifestyle Center
Your Posture Affects How You Breathe, The Way You Exercise – CHEK INSTITUTE
Posture, breath & movement - what's the connection? — Hackney Chiropractic
Be Fit Chiro
Improper sitting posture while eating adversely affects maximum tongue pressure - ScienceDirect