I have found that lately I will get up from my chair and go to another room in the house when I get there I will have forgotten what I wanted in that room. So I turn around and go back and sit down. The second my butt hits the seat, I will remember.
So, I have come to the conclusion that as you get older your brain moves to your butt. To test my theory I do one simple thing. If I ever forget what I went to the kitchen for, I just reach around and grab my ass. Whala, just like magic I remember!
This study must therefor be true.