The aim? Tone up cheek muscles that tend to sag and hollow out with age. Open your mouth, jut out your lips and open your eyes as wide as you can. Then gently apply pressure to your cheeks, working from right to left, up and down and along the lines that run from your nostrils to the outer edges of your lips. Finish of by slowly bringing your lips back into position. Try to do this two to six times a day, for 30 seconds at a time. You may feel a bit daft, but you'll soon see how well it tones up your cheeks.