Definitions for "hyperactivity"
an unusually high level of activity; -- used especially with respect to children who move around frequently and do not sit still very long, most noticeably in school. It is sometimes associated with attention deficit disorder.
excessive physical activity
Having highly or excessively active behavior.
An abnormal increase in body movement, or function of a person or a part of their body.
Hyperactivity can be described as a state in which a person is abnormally easily excitable and exuberant. Strong emotional reactions and a very short span of attention are also typical for a hyperactive person. Some individuals may show these characteristics naturally, as personality differs from person to person.