The feeling of being 'tired and wired,' a quick startle response, and low-level anxiety are common manifestations of anxiety.

“meaning many people in the world experience low-level anxiety or have a low threshold to what could be a full-blown anxiety or panic attack but more often than not is this feeling of being tired and wired and um having a a quick uh you know prepulse startle as we call it in our business a nerd speak for um you know kind of a reactive um to input anxiety”