Having done the 10 day basic vipassana course just after high school (had to find a way to control my restless mind), can't say if it helped with any of those 4 points mentioned in the article. But, gosh, it helped me get some sleep. Finally, I could sleep in the nights instead of just staring at the fan. I could sleep wherever and whenever I wanted.
Of course, its different now, that I consider sleep a necessary evil - such a waste of life. If only I could do away with it....