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Anxiety is a feeling of worry, nervousness, or fear about an event or situation. It is a normal reaction to stress. It helps you stay alert for a challenging situation at work, study harder for an exam, or remain focused on an important speech.
Stress and your health. Stress is a feeling of emotional or physical tension. It can come from any event or thought that makes you feel frustrated, angry, or nervous. Stress is your body's reaction to a challenge or demand. In short bursts, stress can be positive, such as when it helps you avoid danger or meet a deadline. But when stress lasts for a long time, it may harm your health. Stress is a normal feeling. There are two main types of stress: Acute stress.