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.
1. to put into use; employ: to exercise tact. 2. (intr) to take exercise or perform exercises; exert one's muscles, etc, esp in order to keep fit. 3. to practise using in order to develop or train: to exercise one's voice. 4. to perform or make proper use of: to exercise one's rights.