Assembled easily and really works

I liked how quickly I was able to assemble this device. It took me about 15 minutes. Although it's small when you use it appropriately it's quite sturdy. I ordered it to help with poor back flexibility. However I was quite surprised at how effective it was at exercising my abs. It seems the abs work to keep you stable while you arch back toward the floor. I recommend this product for people who are looking to stretch their spines but need some support while doing so. However mind the instruction to move slowly. You get the best benefit from that.More detail ...
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