First Lady Michelle Obama is now a world record holder! As part of her "Let's Move" childhood anti-obesity campaign, and in conjunction with National Geographic Kids," the first lady led a record number of people doing jumping jacks over a 24-hour period on October 11, 2011. She released the details this morning on the Let's Move website:

Back in October, the First Lady joined students, teachers, and parents from all over the country to reach for a big goal: breaking the world record for the number of people doing jumping jacks in a 24-hour period. The old record was over 20,000 people, so trying to break it was no small feat.

Today, we’re proud to announce that with your help, 300,265 people jumped that day! Breaking the record is a huge accomplishment. But we still have a lot of work left to do to meet an even bigger goal: ending childhood obesity within a generation so all children have a chance to grow up healthy and strong.

To reach that goal, we need to make sure that all kids are getting the nutrition they need, have a chance to be active each day and get support from our schools, families and communities. That’s what the Let’s Move! initiative is all about.