For the past week i've been running 1-2 miles each night(started last Monday) and i have discovered that i'm not A RUNNER. I can't run!! Why? Everytime I start running i get tire easily, run out of breath, my chest hurts and i stop. I try jogging but can hardly do much, why can't i run? I talked with some people and they all say that maybe its because i'm not a runner, like if its something you either are or you aren't, I just can accept that! The times i tried running before i always gave up and stopped because i thought that running was just not for me but now i really want to do it and i can't. How do someone who has been physically unactive their whole life becomes a runner?