Michelle Obama: Guinness World Record Holder

First Lady Michelle Obama leads a group of 400 local children on the South Lawn of the White House to help break the Guinness World Records title for the most people doing jumping jacks in a 24-hour period, Oct. 11, 2011. (Official White House Photo by Chuck Kennedy)

(Official White House Photo by Chuck Kennedy)

Michelle Obama has earned her family another place in history. This time, Mrs. Obama will share the honor with more than 300,000 other participants on Sunday who set the record for most people doing jumping jacks in a 24-hour period.

The previous world record was just 20,000.

In a video from the White House, Mrs. Obama thanked National Geographic Kids and the Guinness Book of World Records, who helped organize the event as part of Obama’s Let’s Move! initiative to promote physical fitness and healthy eating for children. She also said she hopes that physical fitness will be a priority for the kids who participated.

“More than anything, I want to say, thanks to every single young person who showed that exercise isn’t just good for you, but that it’s fun too,” Mrs. Obama said.