Photos That Will Make You Incredibly Nervous

The gland releases a hormone called adrenaline, which helps to redirect blood and energy to those parts of the body that will be required to take rapid action, such as the heart and muscles and away from not so important processes, such as digestion. Since the blood flow is directed away, the blood vessels around the stomach close, which may cause the tingling sensation (butterflies in your stomach), which we commonly attach to being nervous.