20-Ways-to-Properly-Manage-Your-Curls-photo16And Dr. LaFrance found that “bad hair days” are “real.” Yes, Dr. LaFrance. Well, any woman with hair can tell you that! But the affect those days may have on your ability to be at your best is more profound than you might think. Dr. LaFrance’s study concluded that bad hair days affect your self-esteem and your ability to perform, as well as just making you feel all-around bad about yourself.