I have bad cardio. I used to smoke in my teens and I think that may have contributed to this. I literally cannot run 1 mile in a light jog, most of the time I can only do 1/2 a mile before i have to take a break. I'm training in MMA now and it really worries me that if I'm in a self-defense situation I would gas out very quickly leaving myself really vulnerable.
I run everyday and try to push my limits, but that's doing little. I'm not overweight, I'm 6'1 165lbs and my overall fitness is good. Is there anything else I can do? I'm not apposed to PED's like EPO, but for now I'd rather try all legal options at my disposal.