By Bradley Elliottt in The Conversation.
If you have ever been nervous about something that is about to happen, then you may have felt the sensations of nausea and “fluttering” – the recognisable and odd sensation deep in your gut known as having “butterflies in the stomach”.
Perhaps you were about to give a speech to a large audience, were in the waiting room for a big interview, were about to step up and take a key penalty shot or about to meet a potential love interest. Rather than actual butterflies bouncing around your large intestine, of course, there is of course something more scientific going on – and it’s all down to your nervous system.
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