What causes the butterfly feeling in your stomach?
We all know that feeling, your about to go on stage for a big performance, or your significant other just did something incredible; whether it’s nerves or otherwise, everyone has experienced the feeling of butterflies in your stomach.
My question is, what causes that sensation? (not what gives you butterflies, but from a anatomical perspective, what physically creates that sensation?)
This question is in the General Section. Responses must be helpful and on-topic.