Experts agree that a certain amount of stress or pressure can provide a sense of urgency to meet a deadline. When the deadline is met, the stress is relieved. In other instances, people avoid a stress by choosing not to travel by plane, for example. In medicine, it is well known that chronic stress has an impact on health. Chronic back pain, headaches, sleep disturbance, heart disease and depression can be linked to long-term exposure to ongoing stress.