yeah doctors have just told me to take it a bit easy with regards to lifting. In regards to breathing, I try to make sure that I continue breathing the entire way through each rep and exercise. Can't hurt the machine, heart maybe but the machine is fine.
No need to feel bad bout the supplements mate, I don't take it to heart. Half the crap I buy is really only to try not because I think I'll turn into the hulk from it. This year I am trying to concentrate on eating good quality food to gain weight.