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.
Intensity of physical activity. Intensity refers to the rate at which the activity is being performed or the magnitude of the effort required to perform an activity or exercise.It can be thought of How hard a person works to do the activity. The intensity of different forms of physical activity varies between people.ntensity refers to the rate at which the activity is being performed or the magnitude of the effort required to perform an activity or exercise. It can be thought of  How hard a person works to do the activity .