I wonder if the increased friction was causing me to use my arms muscles more. I've been doing the same motion using a dry towel on a hard wood floor for years. In any case, this works like a charm. But after trying this out, my abs were burning like nothing before. I don't know how, but this somehow isolates the muscles better than using the towel.
Great workout for the core! ! Results in very short period of time. The Ab Carver is exactly what my Husband and I have been looking for.
you can use it anywhere but I find it works best on the back. it feels so great on my back, especially after a long day. it gives you a tingling sensation that means you're getting blood circulating and it's inexpensive too.
I looks nice and feels nice as well. I love this backpack. It easily fits my 15 in laptop and case, while also giving me the perfect amount of storage with both the outer and inner pockets.
I work on a concrete floor all day and shoes typically dont survive long for me however these seem to stand above my previous pairs. I've had these shoes for quite a few months now and they are still holding up remarkably well and staying comfortable.