Smiling

Yes, I think it is true that smiles enhance our attractiveness. When someone has a warm, happy smile, it just makes me smile in general and it gives off that good vibe. Also, when someone is smiling, it just shows that they're happy and not gloomy and it adds to their attractiveness. And, it also shows you're more likable and competent.

I think the evidence that people who smile more live longer because when you smile, you're usually happy. By smiling, it also helps you sleep better, so when you sleep better=your health is going to be better.