I get anxiety when I have to sit and stay in places. Like meetings, movies, church, funerals, etc. 

I recently went to go deliver some food to a friend of the family and was anxious sitting in the living room with strangers. 

We have a flight coming up and while I have flown pre anxiety with no issues, I’m nervous being “trapped” in the plane will trigger an attack. 

I have my snacks, podcasts, and meditation music ready. Basically what I do when I drive because I have driving anxiety too. 

Does anyone know what this is and why?