Is yawning due to a lack of oxygen?

Related questions

1. What are the symptoms of breathing problems?
2. Should I go to the ER if it hurts to breathe?
3. How do I know if I have dyspnea?
4. Why do I keep taking deep breaths?
5. Is shortness of breath serious?
6. Is shortness of breath dangerous?
7. Is wheezing life threatening?
8. Is it harder to breathe when lying down?
9. What can I take to open up my airways?
10. Can shortness of breath be cured?

Tags

1. #conditions
2. #nucleus
3. #induce
4. #hypothalamus
5. #paraventricular
6. #bored
7. #changing
8. #oxygen
9. #tired
10. #internal
11. #levels
12. #others
13. #yawning
14. #communicating
15. #environmental
16. #another
17. #evidence
18. #brain
19. #suggests
20. #because
21. #means
22. #still
23. #hypothesis