asthma is a medical condition, and there is a HUGE (no pun intended) difference between "overweight" and "obese"
I know plenty of overweight guys that can hang all day in the dojo and put thier feet all over your head, at will. Their weight doesnt stop them. Mine doesnt stop ME.
now, they are the exceptions to be sure, and yes, it is always better to be in shape, but:
1) martial arts isnt a marathon. In REALITY, a fight should be over in 3-5 moves, not seconds, not minutes, not hours. MOVES. To use your example, martial arts is a sprint, not a marathon
2) you ignored the second half of what I said: having a beer gut in no way effects a person's ability to TEACH.
that was the original claim i was refuting. A complaint about teachers who were not in perfect shape. Screw that ****. First of all, i dont know anyone thats in perfect shape, and I know plenty of great teachers. In fact i know one that only became a great teacher AFTER they lost the ability to perform at competition level. Denied the ability to perform, they concentrated on teaching and found out they were really good at it.
no, an overweight guy with asthma cant run a marathon, no one said he could, but he can still do martial arts. There may be some things he wont be able to do at full capacity, but they can still have good technique and be good blackbelts. Maybe not in TKD, but there is an art for everyone.
Cant kick high? go into a kenpo art.
dont have a lot of upper body strength? go into an art that doesnt care about punching, like wtf tkd.
martial arts are not the property of skinny people. In fact, if you take the fact that impact force is = mass X speed, some thin guy will have less mass. That means less power. Thats why there are so many weight classes in boxing, thin, small guys just cant hit as hard as big guys.
I am more leery of fighting fat dudes like me than skinny guys any day of the week for that exact reason. Fat guy can pull a george forman on ya....lol
do you realy believe that a persons physical condition has zero to do with their ability to perform? If so you should stop teaching immediately! By your reckoning an overweight person with asthma can run a marathon next to a fit us marine and will keep pace, right?