"A lot of it has to do with advertising, Lieberman says. ???TV commercials, filled with mouthwatering shots of high-calorie foods, just beg you to get up and go to the kitchen to get something to eat,??? she says. ???And movies have become synonymous with popcorn, such that you are drawn in a hypnotic trance to the lobby counter where you fill up on popcorn, candy bars and other sweets.???" . . . . .