During my physical examination, my doctor asked me about my physical activity level. I described a typical day this way: "Well, yesterday afternoon, I took a five hour walk, about 7 miles, through some pretty rough terrain. I waded along the edge of a lake, pushed my way through brambles, got sand in my shoes and my eyes. I avoided standing on a snake, climbed several rocky hills and took a few 'leaks' behind some big trees. The mental stress of it all left me shattered and at the end of it all I drank eight beers". Inspired by the story, the doctor said, "You must be one hell of an outdoorsman!" "No," I replied, "just a rubbish golfer".