for instance, why did walter diemer, the man who invented it, make dubble bubble pink?d it happened to be pink. guess what. he made the first batch of bubble gum pink and forever and a day thereafter, it's always been pink. >> there's an art to bubble blowing, and no one knows that better than ina cambridge. she's the dubble bubble national bubble blowing champion, and we caught up with her at dylan's candy bar. >> chew for 15 minutes to get all the sugar out so that it's elastic. my second tip is to blow slowly and steadily. [ pop! ] >> well, i guess there's nothing left to do but give it a try. here's something i bet you didn't know. chewing gum burns 11 calories per hour. so if you chewed gum every waking hour of every day for a year, you could lose 11 pounds. i'm courtney for "kids news." >> if you tend to overeat, here's an interesting tip. eat foods with strong smells. a new study found that strong smells encourage us to take smaller bites. and small bites lead to smaller portions. and smaller portions lead to a healthier diet. guess you could call this the "sweet