Is it possible that when we don't feel anxious that our neurological system still is triggered by the same anxiety that we've been suffering from . For this reason we say the anxiety came out of nowhere because in fact our brain is still processing fear as a normal interpretation of life so even when we are relaxed our brain truly is not relaxed and sends sensations through out our bodies ? Sorry if this does not make complete and total sense as when I was experiencing this today I try to describe it the best way as possible . This was a normal day for me I didn't feel anxious at all and all of a sudden I'm in the mirror and I'm putting make up on and I'm getting ready to enjoy my day and all of a sudden I feel jittery or just trembling, dizzy/ faint feeling inside of my body for no apparent reason . For this I asked the question if it is possible that our brain stay stuck in a mode even when our body does not physically feel symptoms or either our or conscious mind is noy thinking about these things ?