I've noticed for some time now that my anxiety tends to spike in the evening. Like as the light goes down my anxiety pops right up. It's not the heavy breathing, trembling type of thing either. It's the type of anxiety that lies under the surface, like a prolonged feeling of fear but you dont really know what you are afraid of, which kind of makes you afraid of everything. My heart beats faster and I have to control my breathing in hopes of making it better. Not to say that I don't experience it in the daylight hours, but at night it gets much stronger. Sometimes it gets hard to sleep simply because the anxiety makes me afraid of it. Idk if other people feel this