But it must be understood, that unless designed otherwise, i.e. unless the Units of Analysis are chosen from all people, most studies are generalizable only for a much narrower population of the people w/in a nation, region, city, etc.
exercising - the activity of exerting your muscles in various ways to keep fit; the doctor recommended regular exercise; he did some exercising; the physical exertion required by his work kept him fit. exercise, physical exercise, physical exertion, workout.
exercise noun (HEALTHY ACTIVITY) 1  A2 [ C or U ] physical activity that you do to make your body strong and healthy: 2  C2 [ C ] an action or actions intended to improve something or make something happen: 3  A2 [ C ] a short piece of written work that you do to practise something you are learning: âº [  U ] formal the use of something: