Speak your mind.
There are numerous theories about polyglots (people who can speak a multitude of languages.) While studying a German polyglot, Neuroscientist Katrin Amunts found that the subject's brain—specifically the Broca's area—was arranged differently than monolinguals. Other theories suggest that any person with an interest in languages and sufficient intellect can not only learn a new language faster, but will be able to become more efficient with each language learned.
Specific polyglot savants like "Christopher" have been extensively studied. Christopher is fluent in 16 languages, has the ability to acquire new languages incredibly easily, and can also identify languages that he cannot speak. While more research could be done, it seems as though savants with incredible language skills frequently have poor hand-eye coordination, weak problem-solving abilities, and social and conversational challenges.