I tried one out. Basically, it's for those that are the too lazy to work their core. You try it on the carpet, and watch it damage the carpet. Try it on a wood floor, and watch it damage the floor, tile or whatever the finish surface is. Many products come out that attract the lazy, not those willing to actually work out. That's what this is. Lol.
Bottom Line: No, I would not recommend this to a friend
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