Jo and Naya's plan to give Ludwig a fright to get rid of his hiccups fails, but they accidentally find a method that finally helps. And it's fun too!

Ludwig is all excited because he has been hearing strange noises in the night. Could it be a ghost?

Even with high-tech running shoes, lots of people still suffer injuries. Barefoot running could be the solution! Knee, hip, and back injuries are often caused by an incorrect gait, which running shoes tend to exacerbate. So should we run barefoot like our ancestors?