I find waiting for things physically exhausting. Waiting in lines, waiting sitting in a room, waiting on friends to decide what they want to eat, walking really slowly with an elderly relative: I find it all physically exhausting even though very little physical energy is required.
If I’m where I need to be to wait, and I’ve done everything I can do, waiting is calm. I do nothing now but wait and read my phone or a magazine. I have done all things I an meant to do, nothing is required of me but for someone else to do their job.
I do get annoyed if it’s an hour plus wait and well after the time my appointment is meant to be, but not really physically upset. Mentally annoyed.