With her “Let’s Move!” campaign to end childhood obesity in a generation, First Lady Michelle Obama has been a vocal – and active – advocate for the importance of a balanced diet and exercise.  From engaging children to plant – and harvest – a White House vegetable garden to hosting a soccer clinic on the South Lawn, there seems to be some sort of activity always going on over at 1600 Pennsylvania Avenue.

Today, in conjunction with National Geographic Kids, the First Lady will attempt to break the Guinness World Record for the most people doing jumping jacks. To be successful, more than 20,000 people will need to do jumping jacks for one minute during a 24-hour time period, which starts this afternoon at 3:00 p.m. ET.

Wherever you may be – across the country or around the globe – there’s still time to be part of this potentially history-making event.  You can find out more about how to participate and make your jumping jacks count by reading the official rules on organizing an event here. And while you’re at it, find out how your local schools can be part of “Let’s Move in School,” too.

Here’s to having fun and staying active!  Good luck everyone!