highly sensitive person

[Jolt]

Sometimes I am the only one on the train who does not have earbuds on.
The rest are reading a book or doing some kind of puzzle.
I sit and look at the people or stare into space.

I often listen to music on the train...it helps me block out the obnoxious cell phone conversations, screaming babies, etc. That, in turn, makes it a little easier to try and read/study.