First Lady & Co. Set Guinness Mark

First Lady Michelle Obama greets local children on the South Lawn of the White House in Washington after their attempt to break the Guinness World Records title for the most people doing jumping jacks in a 24-hour period. The first lady announced in an email this morning that her October bid to break the record for the most people doing jumping jacks in a 24-hour period succeeded. Mrs. Obama says 300,265 people participated, shattering the old record. (AP Photo/Pablo Martinez Monsivais, File)

Question: How many jumping jacks can you do?