Lucy (2014 sci-fi film starring Scarlett Johansson) may be wrong about the 10 per cent. We use our entire brain; neuroscience confirmed that years ago. But using your brain and operating near your full cognitive potential are two different things. Most of us fall somewhere in the middle. While some struggle with memory, others deal with the monkey mind. And many of these concerns have to do with lifestyle habits. No, you don’t have to spend a dime to boost your brain’s potential. By adjusting so