Dr Robert Hamilton is a doctor at Pacific Ocean Pediatrics in Santa Monica, California.

The pediatrician, who has over 30 years experience, recently revealed the secret to calming a crying baby: “shake their little booty.”

Yes, seriously. It actually works.

Unfortunately, he has a rather boring name for this amazingly effective technique, “the hold.”

To calm a crying baby, it’s simple: fold their arms across their chest, grasp the diaper area, then GENTLY rock the baby at a 45 degree angle and shake their bottom back and forth. See for yourself below: