Jamba Juice stores in select U.S. cities hosted “Let’s Jump!” events to help National Geographic Kids magazine set the Guinness World Records title for the most people doing jumping jacks in a 24-hour period. To break the record, more than 20,425 people needed to complete one minute of jumping jacks within 24 hours. First Lady Michelle Obama kicked off the 24-hour period with one minute of jumping jacks at the White House. “Let’s Jump!” supports Michelle Obama’s Let’s Move! campaign, which encourages kids and families to get healthy and active.