Listening To White Noise Might Affect Your Brain In A Weird Way, Study Suggests

http://www.youtube.com/watch?feature=youtu.be&v=L_Hd_VCkfpY

Just make sure what you buy offers non-looping” sounds because, believe me: if the sounds loop or repeat, your brain will figure that out and will then obsess on the repeat patterns, making sleep impossible.