that was in my opinion a horribly written article that was linked to. it starts off talking about brain training, but simply posits that the research behind claims of brain training from the likes of lumosity is insufficient or poorly carried out; this falls short of "unlikely to make you smarter". then, without warning and for no clear reason, the article steers hard into transcendental meditation. here some evidence is presented that little benefit is to be had from transcendental mediation.
however, within this thrashing of transcendental meditation it is mentioned that there in fact is evidence mounting that there are concrete benefits (e.g. decreasing anxiety and depression, boosting working memory) to be had from mindfulness meditation. talk about burying the lead. sounds like science backs up at least this one method of brain training! boing boing... in my opinion that article was not worth linking to.