1 NORTHUMBRIA-A mailing list for the counties of Northumberland and Durham, England. 2  DUR-NBL Mailing List-A list for individuals interested in genealogy and history of Durham and Northumberland Counties.
Physical activity is any body movement that works your muscles and requires more energy than resting. Walking, running, dancing, swimming, yoga, and gardening are a few examples of physical activity. According to the Department of Health and Human Services' 2008 Physical Activity Guidelines for Americans, physical activity generally refers to movement that enhances health.
Definition of exercise for Students. 1  1 : the act of putting into use, action, or practice the exercise of patience. 2  2 : bodily activity for the sake of improving physical fitness. 3  3 : a school lesson or other task performed to develop skill : practice work : drill math exercises.