In the new issue of Ravinia Magazine, Guster guitarist/vocalist Adam Gardner reveals that the hardest thing he ever had to give up was sucking his thumb. “I didn’t stop sucking my thumb until I was 8 years old. I was tired of sneaking ‘hits’ in the bathroom.” Find out what else Adam and bandmates Ryan Miller and Brian Rosenworcel have to say in the in the new issue of Ravinia Magazine, free in the park every concert night. Remember the magazine, which includes features and programs notes, changes every week. Don’t miss an issue! Guster performs with Jack’s Mannequin on Sept. 3. Pavilion and lawn tickets are available.