Any body movement produced by skeletal muscles that requires energy expenditure.
Examples can cover domains as varied as leisure, work, or transport: eating, sitting, walking, running, driving…
A distinction can be made by:
- activity intensity, between sedentary activity, light-intensity activity, moderate-intensity activity, and vigorous-intensity activity
- purpose, between exercise activity and non-exercise activity
It should be noted that, although specific, sleeping can be considered a physical activity in the broadest sense.