All I know is it has made me feel SO good. It’s the most refreshing thing I can do. Wanna wake up? I get on the jiggler. Bloated/gassy? Get on the jiggler. Wanna feel refreshed? Get on the jiggler. Feeling blah? Get on the jiggler. I do exercises on it too and just all around makes me feel better so that’s all I care about!