why can't you do any real martial arts in real life? Because I'm mildly anemic so I lack some iron in my hemoglobin. Any strenous activity drains me very quickly. Well I used to be anemic, but I think it was because I was just iron deficient so after taking iron pills for a while, I got back to normal. But by then I stopped caring about martial arts. I had to quit karate because of that. The only sport I play now is tennis and I never run on the court sorry to hear that and i am glad you are better now. but hey you could take up tai chi. thats not strenous at all. than maybe you could work your way up to more physically demanding arts. but hey you said you don't have any interest in martial arts. but i think you should give it another shot.