Chances are everybody experiences the feeling of butterflies in their stomach at least once in their lives. For those who aren't sure how and why this feeling manifests itself, here is a video explaining the phenomenon.
According to the folks at AsapSCIENCE, nervousness plants butterflies inside people's guts by triggering the production of adrenaline.
When exposed to this substance, the human body diverts the blood flood to vital organs. Consequently, blood vessels close around the stomach. This in turn leads to the sensation of fluttering butterflies.
The good news is that people can train themselves into better coping with nervousness.
What's more, it would appear that folks who participate in various sports competitions are especially gifted at controlling how their body responds to stress.
In the case of Olympians, the technique most often used to deal with nervousness is mental imagery. Check out the video to see what this technique is all about.