World’s oldest man says smiling is his secret to 112 years




112-year-old Chitetsu Watanabe says smiling is his secret to long life. He was certified by Guinness World Records on Wednesday as the world's oldest living man. SUBSCRIBE to ABC NEWS: https://www.youtube.com/ABCNews/ Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc GOOD MORNING AMERICA'S HOMEPAGE: https://www.goodmorningamerica.com/ #ABCNews #OldestMan #Japan #GuinnessWorldRecords

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