Butterflies in the stomach are really just those nervous, fluttery feelings you may experience before a big math test or when you learn that you’ll dance the lead in your ballet group’s next performance. These flutters in your tummy are perfectly normal – lots of people get them at some time in their life. Some people believe they actually make you perform better by keeping you on your toes.
The expression began when an imaginative writer created the phrase, and people have been using it ever since. When was the last time you had butterflies in your stomach?