Lumosity

I’ve been playing with Lumosity, which (from their site) “is the brain fitness program designed by neuroscientists that is scientifically demonstrated to improve your memory, attention and processing speed.”

http://www.lumosity.com/

It’s free and actually really fun. I’m on task 4 of 30 and “improving” but I expect to be able to move solid objects with my mind by the end :-)