I'm not sure I am in the right sub but this one was the first to come to mind. So, I got this weird thing I noticed already a few years ago. I have no trouble breathing throughout the day but every single time I start to concentrate on my breathing I suddenly feel out of breath and I feel my heart beating really strong and it's like I can't breath properly. I don't notice this as long as I don't concentrate on my breathin and it's been like this for years. Am I like hallucinating/imagining things or what does that mean? I don't feel like it's physically because then I should feel the shortness of breath even if I don't concentrate on it but I'm not sure what else it is supposed to mean. Like is it there throughout the day and I only notice it when I concentrate or does it suddenly just appear out of nowhere, every time I concentrate on my breathing.