We all get sick. It's just a fact of life. Our noses run. We sneeze nosily, mightily and often. Our tonsils look like plump Vienna sausages. Our tongues become coated with a layer of thick, gray yuck. Frogs crowd our throats. We are collectively miserable. But even in our darkest and most desperate sick days, we should aim to live in harmony with the planet. Here's how.