Hey. I'm 20, male. I regularly run on an elliptical and occasionally a stationary bike, and in the warmer months I use my bike very frequently as transportation. What I rarely do is run on pavement for exercise.
On those occasions I do, I notice that very soon after beginning I get chest pains. It originates in the center of my chest, and my throat tightens and it becomes a little difficult to breathe. Even after stopping it lasts, though gradually decreasing in intensity, for 30min .
Like I said, I go to the gym, sometimes up to five times a week. I run on an elliptical anywhere from 30 minutes to an hour. I'm not at all unaccustomed to cardiovascular exercise, and if the heart meters are to be trusted at my gym my heart rate can get up to 180 without experiencing even the slightest hint of this pain.
I've thought maybe the fact that, if I do run, it's usually because it's a little late and I don't feel like heading out to the gym, and for that reason it tends to be cool outside. But then again, I ride my bicycle at night occasionally, albeit it's still winter so it's colder than usual here (CA). I don't know if cold air could have anything to do with it.
Thanks so much for any replies.