Re: What is really happening in my body when I feel 'butterflies' in my stomach

You may of noticed that whenever you have butterflies in your stomach you're feeling nervous or excited. When you are nervous or excited organs just above your kidneys release a chemical messenger into your blood called adrenalin.

Humans have adrenalin because it helps protect ourselves from danger, back in ancient history cavemen would not be feeling nervous because they had a big exam, they would be feeling nervous because they thought something was going to eat them. The adrenalin helped them run away from or fight the thing they thought would eat them. When we have to run quickly or fight we need lots of blood to go to our muscles and other important organs, so the adrenalin sends most of the blood there and takes it away from the unimportant parts of the body, like your stomach. So when you get butterflies in the stomach, the funny feeling is caused by the blood going away from your stomach to your muscles.