So if your expression is happy, it creates similar changes in your feelings, thoughts, and physiology. Others see smiles as engaging. Smiling sends a signal to other people that you are ready to ...

They often smile too much to cover up how they truly feel and cover up their feelings of loneliness or sadness trying to seem happy. They may constantly help others in order to feel needed or valued ...

What’s more, a huge meta-analysis of research into facial expressions reveals that most of the time people who are genuinely happy do not smile at all. Another study found that ten-pin bowlers ...