Is it bad to smile too much?

Related questions

1. What do the faces on Snapchat mean?
2. How much money did the smiley face make?
3. What does this emoji stand for?
4. Does smiling give you wrinkles?
5. Is always smiling a good thing?
6. What is smile depression?
7. What is a real smile called?
8. Do pets make you happier?
9. Do white teeth make you more attractive?
10. Are smiles contagious?

Tags

1. #research
2. #smiling
3. #worse
4. #grinning
5. #suggests
6. #strategy
7. #advice
8. #actually
9. #though
10. #people
11. #piece
12. #after
13. #frequently
14. #found
15. #faking
16. #coping
17. #researchers