Three years ago I was doing sit ups and all of the sudden couldn’t catch my breath. Ever since then it has stuck with me. It’s like I feel the need to gulp air to catch a deep breath but often times cannot catch it . Also constantly yawning . Even my yawns do not come to completion if that makes sense . Some days I barley notice it at all; although the need to take deep breaths still occur; but other days usually 2-5 days at a time it seems especially bad and it’s all I can focus on all day . When I think about it to much it makes it worse I feel like. I’ve had every test imaginable done and am physically fine according to many different doctors. I notice when I take a few days off from the gym it seems to get worse . I definitely think the exercise helps but I consider myself very fit and don’t think that’s the main reason . Many doctors tell me it is anxiety which doesn’t make sense because i am happy and calm in life for the most part : I even tried their antidepressants and it did not help. I’m thinking it may be permanent and it’s very frustrating that there seems to be no solution or answers. I appreciate your insight