brain power

But in some ways, he's just as forgetful as the rest of us.

"I still forget plenty of basic things, like where I left my keys," said Mullen, a medical student at the University of Mississippi.

Many experts believe that brain-training programs are a waste of money. They roll their eyes at the idea that using such computerized programs can improve attention, memory or overall intelligence.

Some experts contend that brain training is useful and can improve cognition by harnessing the power of brain plasticity, the idea that our brains can learn new skills and adapt even later in life. They argue that there's a difference between "brain games" and research-backed "brain training."