It was a magical moment at an Illinois middle school on Friday morning – and by magical we mean deafening – as hundreds of students shrieked with delight when they saw their idols walk through the gymnasium doors: The Jonas Brothers.

The heartthrobs were there – in front of 750 kids at Kimball Middle School in Elgin, Ill. – to kick off a campaign promoting healthy eating and a contest encouraging kids to make their own TV commercials for Breakfast Breaks. (Budding young filmmakers can enter the contest at www.breakfastbreaks.com.)