All the responses of an organism under pressure or constraint from its environment. Stress is a response mechanism that can bring different emotions, including anxiety or great joy in connection with individual perception in the face of the stressful event. Nervous tics and other harms of stress
A stressful event causes a chain reaction that starts in the brain and results in the production of cortisol by the adrenal glands. If the stress is too high or prolonged, the cortisol-saturated hippocampus can no longer provide regulation. Cortisol invades the brain and creates depression.