11. High-pitched voice
Even though our society and media used to portray high-pitched voices as a sexy symbol, once again, what you see in movies and TV shows is so far from the truth. In fact, a study conducted in 2013 has discovered that female voice sounds way more attractive when it is “breathy and moderately high-pitched.”
That doesn’t mean you should imitate Scarlett Johansson, but make sure not to speak like Paris Hilton either, because it won’t help you make a good first impression.