Incorrect. The correct answer is: Testicular. Sleeping is not a common negative behavior related to kids' stress. From the WebMD Survey: 43% of parents said their children argued more; 37% reported increased crying or whining; 34% said children appeared worried or anxious.
Fillers help to add volume to the white line, where lip liner is usually placed. This helps to soften the vertical lines, but does not always flatten them completely. Filling this area also provides the illusion of fuller lips without actually increasing lip volume, which many patients like.
One cause of lip lines is, unfortunately, using your lips! Every time you purse your lips to drink through a straw or whistle a tune, you create folds in the skin. Over time, the repetition of this pursing motion can result in permanent creases and lines around your mouth.