Physical fitness is a great way to invest in yourself. Either you spend the money (which it doesn't really take that much of really) to stay healthy now, or you

Physical fitness is a great way to invest in yourself. Either you spend the money (which it doesn't really take that much of really) to stay healthy now, or you spend it down the road getting tubes stuck in you in at a hospital. That said, there aren't any side-projects, interests, hobbies that you'd be interested in trying out on the side and seeing if you can turn into small businesses. Surely, there has to be something.