GB Taekwondo Olympic medalist Sarah Stevenson MBE and sports legend Kriss Akabusi MBE led the record-breaking event at the Copper Box Arena in Queen Elizabeth Olympic Park, London.
More than 391 participants joined in the 30 minute class to break the world record and make exercise ball history.
The event celebrated the launch of Müllerlight Goodies' new flavour, coconut yogurt with chocolate covered flakes, and Müller’s partnership with Team GB for Rio 2016.
Müller is an official partner of Team GB for the Rio 2016 Olympic Games, and will be galvanising support on social media using #InTeamGBsCorner.
Müllerlight brand manager Sarah Newman said: "This is the first time Müller has broken a Guinness World Record and we are thrilled to have joined forces with Sarah Stevenson and Kriss Akabusi in our bid to make exercise history!
"This broken record is the first of a series of activities Müller has planned as to rally the public to get in Team GB’s Corner this summer and support their success at Rio."
The previous record of 353 participants was formerly set by Michelle Bridges (Australia) on the set of NBC’s "Today" in New York, New York, USA on 10 April 2014.
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