First Lady Michelle Obama will lead hundreds of local children in doing one minute of jumping jacks on the South Lawn on Tuesday; in order to help break the title for the most people doing jumping jacks in a 24-hour period.

The event will be reviewed by an official from Guinness World Records and will signal the beginning of a 24-hour challenge.

To break the record, more than 20,000 people around the world will need to do jumping jacks for a minute.For more details go to