Poor breathing can turn into anxiety, and cause dry mouth and fatigue. It can also aggravate respiratory problems and is a precursor for cardiovascular issues.  When we chest breathe, we use muscles in our shoulders, neck, and chest to expand our lungs, which can create neck pain, headaches, and an increased risk of injury. With chest breathing shoulders slump forward and posture changes, causing rounded shoulders and a humped back, and a sagging stomach. Poor posture leads to poor longevity outcomes in terms of balance, ability to remain active and cardiovascular issues. It’s very common to not breathe fully and easily, most Americans do not have full use of the diaphragm.