went to the matrix thursday night after a hard day at stanage,and noticed that there was a lot of chalk in the air and was very muggy there . only had a a few hours there and had a very bad cough after . shurely this is bad if you use the wall few times a week to do some training there. shouldnt a climbing wall be well ventilated, our climbing walls in snowdonia are why shouldnt it be there as a clean environment to train in.
ioan