People who score high on activity are generally bussy and energetic. They love all kinds of physical activities, hard labour and physical exercises included. They get up early and quickly, jumping from one activity to another and have a wide range of interests. People with low scores are physically inactive, lethargic and easily tired. They always move at a calm pace and prefer quiet and calm holidays. High activity is a characteristic of the extrovert and low of the introvert.
Eysenck, H. J. (1998)