Get Niigata-shi, Japan typical March Weather including average and record temperatures from AccuWeather.com
Symptoms of Anxiety. Symptoms of Anxiety: Introduction. The symptoms of anxiety are due to the body's reaction to stress called the fright, fight or flight response. This reaction developed in early human evolution as a means to increase alertness and readiness to react to dangerous stressors, such as the threat of a man-eating predator.
The physical symptoms of anxiety are caused by the brain sending messages to parts of the body to prepare for the âfight or flightâ response. The heart, lungs and other parts of the body work faster. The brain also releases stress hormones, including adrenaline.