Why do I run out of breath easily?

Related questions

1. What causes sudden shortness of breath?
2. Does asthma go away?
3. Can pneumonia go away on its own?
4. What should you do if you have trouble breathing?
5. Why does putting Vicks on your feet stop coughing?
6. Is it OK to exercise with shortness of breath?
7. Is it a good sign when coughing up thick mucus?
8. How do I know if my cough is serious?
9. How long does a bronchitis cough last?
10. How long is someone with bronchitis contagious?

Tags

1. #breathe
2. #breathing
3. #rapidly
4. #beginner
5. #exercising
6. #triggers
7. #breath
8. #accumulate
9. #increase
10. #reason
11. #primary
12. #running
13. #getting
14. #system
15. #speed
16. #levels
17. #build
18. #carbon
19. #increases
20. #dioxide
21. #without
22. #respiratory