Constant yawning and issues with your breathing may be symptoms of health problems like anxiety, panic attacks, or heart, lung, and breathing problems. Sometimes, these symptoms may occur without any apparent reason and may not be a cause for alarm, as you can manage them by doing breathing exercises.

Yawning is a stereotyped physiological behavior that can represent a sign or symptom of several conditions, such as stroke, parakinesia brachialis oscitans, parkinsonism, Parkinson's disease and epilepsy.