At some point in your school career, a teacher may have lectured about the fact that humans use only 10 percent of their brains. During those classes, you daydreamed about unlocking your whole brain and becoming a superhuman capable of almost anything. That's the premise behind, "Lucy," starring Scarlett Johansson.
It the film, Johansson ingests drugs that jimmy the locks in her brain, unleashing fantastic new capabilities. She masters languages with ease. She develops telepathy and telekinesis. She punches bad guys in the face.
No one is precisely sure where the 10 percent myth originated, but sadly, it's not true. You actually do use most your brain's capacity. Brain scans prove that your entire hunk of gray matter is continually pulsing with electrical activity.
Furthermore, if you had a lot of brain power to spare, your noggin would be able to absorb a lot more abuse. As it stands, just a minor blow in just the wrong way can cause debilitating brain damage.
That's not to discourage you from trying to tap into your brain's full potential. You can always learn new skills and master old ones. Just don't expect to overhaul your mind with a miracle drug.