Is cardio or fat burn zone better?

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Tags

1. #depending
2. #which
3. #different
4. #cardio
5. #zones
6. #whether
7. #burning
8. #suggests
9. #ranges
10. #heart
11. #workout
12. #chart
13. #labeled
14. #carbs
15. #improve
16. #exercise
17. #supposed
18. #those
19. #intensity
20. #endurance