My friend asked me to put out the question concerning her coworker. He was told his arteries were too small to stent and he has a least two significantly blocked arteries. He was referred to our premier reaserch hospital and was told he has to be on some intense exercise program to enlarge and create more flexible arteries so they can be stented. The only other option is bypass and even with that his particular situation makes it abnormally risky. Has anyone heard of this exercise theory? Because if that's the case, I will seek it out myself.