hi everyone, (1) i was at my class last night and there was a student who was having trouble breathing, i noticed him having it when we were going through the techniques but during fighting one of the sempais was asked to watch us (as he is 12 and im 22, hes a green belt, im a white) and the sempai noticed him having difficulty breathing and asked if he was alright, he replied that he wasnt and that he couldnt breath, all the sempai did was put his hand over the student belly for some reason and not much else except to breath properly and kia when he hits me, i founds this grossly wrong. anyone else have opinions on what happened? how many karate teachers out there now first aid? (2) ive noticed in the last couple of weeks one of the other sempais there is overweight, its not that hes overweight that i have a problem with its that when when we start going through our techniques at the start of class hes alright and techniques are good but as we go on, he can barely do the kicks properly, so bad that my kicks are great and im only a white belt (my kicks are still bad though). anyone have any opinions on this kind of teacher? (3) we do push up on our knuckles, its hard as hell and hurts, but does anyone know of any health problems with doing these? i mean i also like to draw and play guitar and i sure as hell dont wanna screw up my hands. thanks if anyone could reply with their opinions on the above questions.