Clowning around to ease the pain of Bay Area hospital patients

SAN FRANCISCO (KGO) -- It's 10:30 in the morning and Calvin Kai Ku is making the rounds in the Pediatric Unit at California Pacific Medical Center.

He's not a doctor or a nurse. He's a medical clown.

And what he does to improve the health of patients is indispensable.

Watch the video above to learn more about the healing power of laughter.

Learn more about the Medical Clown Project.