explain the difference between physical activity and exercise.

Brief Explanations:

Physical activity is any bodily movement produced by skeletal muscles that results in energy expenditure. It includes all daily - life movements like walking, climbing stairs. Exercise, however, is a planned, structured, repetitive, and purposeful form of physical activity with the goal of improving physical fitness, such as going to the gym for a workout.

Answer:

Physical activity is any bodily movement for energy - expenditure in daily life. Exercise is a planned, structured form of physical activity for fitness improvement.