Need a little inspiration today? These tough kids will do the trick!

This video was created by patients at Children's Hospital at Dartmouth-Hitchkock (CHaD) and features children, families, doctors, nurses and administrators lip-synching the Katy Perry's power anthem, "Roar."

The hospital's Child Life Specialist Holly Gaspar helped organize the production, and she says "All of our CHaD Kids have a roar. Sometimes we hear it, sometimes we see it, and sometimes we feel it. They are strong, they are brave, they are all fighters."