You know that nervous feeling you get when you're about to present something in front of the class? Sometimes, I feel that feeling for no reason. I feel like that when I'm in my bed reading a book, when I'm outside walking around, when I'm eating, but I don't understand why. Could it be anxiety? These feelings are not so bad that I would call them anxiety attacks or panic attacks, but they do make me feel pretty nervous and sometimes my heart starts racing and my breathing gets shallow.