Brainwave entrainment for memory improvement is like a mental gym—the more sets you do

https://www.reddit.com/r/ReviewJunkies/comments/1rhwfjw/the_brain_song_review_i_was_skeptical_about/

Brainwave entrainment for memory improvement is like a mental gym—the more sets you do, the bigger your memory muscles get, and you might remember where you left your keys.