You can do mouth exercises to get rid of chin jiggle.
One more time: You can't precision-target fat loss
. It's just not possible to burn off the jiggle under your chin—or your arms or the backs of your legs or any other specific 5-inch-by-5-inch-square area. When you lose weight, you lose it all over your body, explains Matthew Berenc, director of the Equinox Fitness Training Institute
. Some people may happen to notice more of a difference in the way that exercise makes their jaw or arms look, but it's in their genes—there's really nothing the rest of us can do to guarantee those results.