What happens if you pop your knuckles?

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Tags

1. #crack
2. #explain
3. #return
4. #again
5. #escaping
6. #gases
7. #fluid
8. #forms
9. #joints
10. #knuckle
11. #bubbles
12. #order
13. #synovial
14. #until
15. #lubricant
16. #scientists
17. #stretch
18. #which
19. #present
20. #released
21. #rapidly
22. #joint
23. #capsule