Extracting a buckshot from the back of a hunter’s head in a mosquito-infested tent at the edge of a peat bog is not the best way to work off a hangover, nor is a four-hour snowmobile ride to a deserted cabin in the woods where your patient is trying to ward you off with a bush ax. But that’s the reality when you sign up for Hard Rock U, a medical school set deep in the heart of the Canadian Shield in Northern Ontario.