Acute stress is a persons immediate “fight-or-flight” response; it cam be intense or even thrilling.  Eustress is manageable stress that fosters growth and adaptation as neurobiological changes enhancing functioning as the person rises to meet the challenge. Distress is unmanageable or overwhelming stress.  Chronic stress results from daily exposure, such as relationship or work difficulties. Unrelenting stress may exceed the adaptive capacity and lead to health problems.