Health Fusion: 3 ways those sneaky elves on shelves and other traditions may help you handle the holiday blues

<p>Why, at a time when people are supposed to be full of holiday joy and cheer, do you feel sad when you walk by a tree that's decorated in full, twinkling regalia? In this episode of "Health Fusion," Viv Williams gets tips on how to handle the holiday blues from a University of Minnesota expert and learns lessons from — believe it or not — the Elf on a Shelf.</p>