My daughter gave me this hat for Christmas. It is a little challenging to wear, but I love it. So far, I have worn it only to walk up and down the hill by our house…hardly a public outing. Here’s the thing: this hat is downright therapeutic. As I walk along, the little balls bump against my head ever so gently. It is almost like the scalp massage that is the best part of getting a haircut. There is, so far, no evidence of increased brain activity, but I am more inclined to make time for my walk despite inclement weather and/or a general tendency towards laziness.