Arnold Schwarzenegger prank: Arnie goes undercover as personal trainer at Gold's Gym in California

Subscribe to ITN News: http://goo.gl/zRYiYn Gymgoers in California were given a hilarious surprise when their personal trainer turned out to be none other than Arnold Schwarzenegger. In a viral video that went online this week, the former Mr Universe bodybuilder wore a dodgy disguise to pose as a personal trainer Harold Kleiner at Gold's Gym in Venice, California. He shocked unsuspecting gym members by asking them about their workouts and dabbing their sweaty foreheads with a towel. "Oh my God," and "You look so familiar to me" were some of the things that those caught in the prank said to Schwarzenegger. The prank was done to support After-School All-Stars, a non-profit organisation that encourages childhood fitness. Report by Mark Morris. Like us on Facebook: http://www.facebook.com/itn Follow us on Twitter: http://twitter.com/itn Add us on Google+: http://bit.ly/17z0Dpd More stories from ITN: Amazing video from a falcon's back as it goes hunting: http://bit.ly/1aGPSCA Reporter tries out awkward National Hugging Day mission: http://bit.ly/1ju76FF Shocking footage of dolphin slaughter in Taiji Cove: http://bit.ly/1mtt4Lq Helicopter falls from the sky in Syria: http://bit.ly/1mavlIo Another royal baby! Zara and Mike Tindall have girl: http://bit.ly/1jaFVSN Devil baby terrorises innocent New Yorkers: http://bit.ly/1gQ8KzS Tiger attack: Farmer killed by big cat in India: http://bit.ly/1b5V5Rc Reformed criminal fronts pickpocketing awareness campaign: http://bit.ly/1eSTj8P Incredible! BMX biker rides across Texas bridge: http://bit.ly/19wyYIl Woman jumps off bridge to escape police and survives: http://bit.ly/1dnJDo8 Shocking pictures: Lion found hanged at Indonesian Zoo: http://bit.ly/1dsoIC4 Listen to the FIFA World Cup anthem for 2014: http://bit.ly/1j54IYn Plane crashes on a beach twice in one day: http://bit.ly/JNLpUK Adorable polar bear takes shaky first steps: http://bit.ly/1cUZkib Drone films wakeboarders surfing on flooded roads: http://bit.ly/1dC3pZE See 2013's Most Watched Videos: http://bit.ly/1cKAmGl See our Biggest Videos of All Time: http://bit.ly/18ZACCf