There are two scientific things that sort of occurred along with the search for ch. We did discover that different kinds of meditation actually affect your brain in quite specific ways, including some studies that have shown that the e e g pattern that is created through monthra mediation is different from any other kind of meditation. Anything that works on your che out performs exercise when it comes to actual physical health improvement that can be measured. So even though the underlying theory behind it is not scientifically valid at all, the actual effect of the practices has been scientifically shown.