Is it possible to force yourself to feel happier? Yes it is, according to research out of Wake Forest University in North Carolina. Scientists found that active behavior, like singing and dancing, boosts mood. Even laughing out loud or simply smiling for no reason can send your attitude skyward. Are you seeing a connection to the popularity of karaoke here? Singing, some dancing and lots of laughing out loud. Come to think of it, laughing out loud is a great ab exercise too.