What is reverse plank good for?

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Tags

1. #important
2. #prevent
3. #obliques
4. #works
5. #plank
6. #muscles
7. #performance
8. #glutes
9. #posterior
10. #athletic
11. #exercise
12. #doing
13. #hamstrings
14. #abdominals
15. #sagging
16. #meaning
17. #reverse
18. #extension
19. #lower
20. #tighten