<s>[INST] i have been feeling the constant need to yawn, and sometimes it is hard to get a full yawn out. when i try and ignore it, it feels like my chest is tight and constricted. i have heard it might be anxiety, but it is getting very annoying and hard to work with... [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Yes, stress and anxiety can cause yawning, chest tightness and constriction feeling. Bur better to get done ECG and 2d echo to rule out heart diseases as these can also cause similar symptoms. So first rule out heart diseases. If both are normal than no need to worry. Your symptoms are mostly due to stress and anxiety. So consult psychiatrist and get done clinical examination, counseling sessions and try to identify stressor in your life. Start working on its solution. You may need anxiolytic Chat Doctor.  So avoid stress and tension. Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>