Easy ways to do this are to open your mouth wide and move your lower jaw up and down 10-15 times, while keeping your bottom lip pulled tight over your teeth. Yes, you’ll look funny, but if your double chin disappears do you really care? Another quick exercise is to pucker your lips and hold that position (you should feel the skin around your jaw and chin tighten). And don’t forget to stretch—stretching your chin, neck and jaw also help improve elasticity in those muscles and that skin. Tilt your chin down towards your chest then roll your chin to one shoulder, then back to center, then to the other shoulder and repeat.