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Not sure if these guys do anything. Trying not to rely only on them. Using them to augment regular workout routine and ab work. Read morePublished 8 days ago by K. Hong
I work and teach GroupX for 24HF and I use this to relax my core as well as get an ab workout. For me, it works well, I have seen results. Read morePublished 9 days ago by Terence