Is it okay to run barefoot on a treadmill?

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Tags

1. #consistent
2. #incline
3. #change
4. #intervals
5. #overuse
6. #speed
7. #encourage
8. #outdoors
9. #injuries
10. #placed
11. #steady
12. #barefoot
13. #treadmill
14. #reduce
15. #movement
16. #stress
17. #perform