Test anxiety is a physiological condition causing extreme stress, anxiety, and discomfort before or during a test. It can be caused by poor study habits, lack of preparation, fear of failure, past poor test performances, worrying excessively prior to tests, and unrealistic expectations. Symptoms include physical issues like sweating and rapid heartbeat, emotional problems like crying or frustration, and cognitive difficulties like negative thinking and lack of concentration. To reduce test anxiety, one should lower stress, eat well, exercise, sleep enough, and be well prepared for exams.