A City Guide To Erdaojiang for Exercise for these individuals may act as a positive distraction from negative and stressful appraisals, or as time out from work or other demands. During exercise, a person may focus on aspects of the physical exertion or on the heart-rate monitor, they may distract themselves by listening to music or planning a holiday, or they may use the time to think through current stressors or demands and plan their coping responses see Chapter Finally, exercise can have psychological benefits for those experiencing cognitive decline as a result of ageing or dementia. Cotman and Engesser-Cesar recently reported that physical activity catecholamines these chemical substances are brain neurotransmitters and include adrenaline and noradrenaline. noradrenaline this catecholamine is a neurotransmitter found in the brain and in the sympathetic nervous system. Also known as norepinephrine. adrenaline a neurotransmitter and hormone secreted by the adrenal medulla that increases physiological activity in the body, including stimulation of heart action and an increase in blood pressure and metabolic rate. Also known as epinephrine. A City Guide To Erdaojiang 2016.