What triggers happiness in the brain?

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Tags

1. #created
2. #chemicals
3. #receptors
4. #include
5. #response
6. #parts
7. #dopamine
8. #endorphins
9. #target
10. #medicine
11. #brain
12. #drugs
13. #natural
14. #serotonin
15. #oxytocin
16. #there
17. #happiness
18. #however
19. #released
20. #these
21. #activate