Anxiety is an emotional state associated with fear and worry that causes arousal. There are somatic and cognitive effects of anxiety. Somatic anxiety includes increased heart rate and sweating while cognitive anxiety involves negative thoughts and fear of failure. Trait anxiety is part of one's personality while state anxiety is a temporary response to a situation and can affect both high and low trait anxious individuals. Factors like evaluation, injury, and success/failure can impact anxiety levels during competition. Anxiety is measured through observation, questionnaires, and physiological indicators. Stress management techniques like breathing, positive thinking, and mental rehearsal can help reduce anxiety.