Cewek Nakal. Stress. Stress is the body's response to changes in physical, mental, emotional, or environmental conditions on a person. Stress also can disebakan by factors originating from outside (such as the environment) or by factors originating from within (such as attitudes, feelings, etc.). A common cause of stress is due to illness, accidents, fear / loss and anxiety. Each individual has a different response to stress. Own stress response is rapid and can affect bodily function, motivation or productivity. Body's reaction to stress begins and is controlled by the central nervous system (located in the brain and spinal cord). In response to stress, the brain gives the signal to the adrenal gland to release hormones (adrenaline (ephinephrine) & norephinephrine) which will lead to surrender or fight response to deal with stress.