The benefits of daydreaming

On a daily basis, you spend between a third and half of your waking hours daydreaming. That may sound like a huge waste of time, but scientists think it must have some purpose, or humans wouldn't have evolved to do so much of it. So, what exactly happens in the brain while you daydream? Elizabeth Cox takes a closer look at the science of daydreaming through the mind of a teenager. [Directed by Biljana Labović, narrated by Alexandra Panzer and Hani Furstenberg, music by Weston Fonger].