[mirv]

excpet iron in blood is part of molecule, and not in metallic bonding, hence not really a great conductor. Water itself will not conduct, however free-floating ions "hanging about, chilling, having a beer" (for example, sodium and chloride ions in salt water) will conduct, as they're able to flow freely throughout the liquid in which they are suspended. That's why blood conducts much better than skin, and why skin is more conductive when sweaty (it's not the skin which conducts better, it's the sweat).