Stress is the body's response to any demand or threat, whether internal or external. Stressors can be physiological, such as illness, or psychological, like work or family demands. The stages of stress are alarm, resistance, and exhaustion. In the alarm stage, the body's systems speed up; in resistance, it tries to adapt; and in exhaustion, damage occurs if stress is not managed. Both individual and organizational factors can cause stress. Positive stress is motivating, while negative stress harms health. Managing stress requires techniques like exercise, relaxation, and social support. Employers can help by providing flexibility, clear roles, recognition, and wellness programs.