20, Male, currently in the joining process, going for infantry, so since i first applied i started getting out running and was all going well, i was a vaper at the time, and at the time i was usually getting about 9:30 on my 2Ks, and then this one run, i got about 3/4 the way through and had to stop my chest was tight i was wheezing bad, this made me quit vaping cold turkey but ever since then, after every run (which is now down to like 8:45) my chest gets tight and i get wheezy, but even with that reaction, i can still give my self 2 minutes break then do another 2K within 9:30, i havent had any other symptoms any other time of day, only after running. Never had asthma before, not in childhood not in my teens etc, recently had my Assessment Centre, which i passed with flying colours, couldnt have gone better. So im unsure as to whether it could actually be asthma or something else i dont know.