Is it possible for anxiety to get worse during exercise? Ever since I was a kid, I have struggled with my breathing and fast heart rate when running or walking, or any form of exercise. I thought it was due to something physical and being unfit however I was extremely active as a child so i don't think it would be anything physical but i'm unsure. This anxiety still exists now, even when i'm just walking i feel my throat close up as if i'm starting a panic attack... i've been so scared to get back into exercise due to this stress, it seems that exercise has the opposite effect on me and that's why i do not find it therapeutic or relaxing even afterwards. Does anyone else have this issue? I've done brief research and I know this is possible but there are just so many possibilities, will probably see my doctor about this to see if anyone can rule out any physical reasons so i can stop having health anxiety about having some sort of physical problem.