Greg Hardy: How does an elite NFL athlete not have cardio built up from years of training?

Anyone have any insight on why he was about to fall over even during the interview with Bisping? I know he used an inhaler before in between rounds but damn, does he have an extra medical issue going on? Especially when he would be getting world class level mma training...

he has asthma
 
Cardio isn't a static thing. Different activities are taxing on the body in different ways.
 
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