The September issue of Marie Claire features an excerpt from Nina Garcia’s Look Book, the editor's fourth installment of fashion non-fiction. The usual bank of style advice is present--always be prepared, try the unexpected for a refreshing look, etc.--but one thought in particular really stuck with me and, moreover, had me feeling surprisingly impressed by Ms. Garcia’s knowledge on the science of the human brain. Welcome to neurobiology 101. Class, if you’ll all take out your Marie Claire magazines and turn to page 92, we can begin. Here Nina says, “Style is like a muscle: you have to exercise it regularly or you’ll lose it.” Seems simple enough, right? It’s the same old “practice makes perfect” idiom that most of us came to know about in early years of elementary school. And even though Garcia is using a cutesy comparison of ‘style is like a muscle’ to make her point here, her humble simile is backed by hard scientific data.