Why do I run out of breath when I run?

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Tags

1. #primary
2. #these
3. #routine
4. #increases
5. #causes
6. #walking
7. #barring
8. #jogging
9. #breathing
10. #build
11. #adequately
12. #minutes
13. #dioxide
14. #minimum
15. #carbon
16. #breathlessness
17. #serious
18. #reason
19. #changes
20. #running
21. #making