Hyperactivity (noun)

1. Excessive or abnormal levels of activity or energy.
2. Overactivity or excessive energy.

Origin:

From the greek prefix "hyper-" meaning "over" or "beyond" and the latin word "activity".

Examples:

1. His hyperactivity made it hard for him to focus on one task.
2. Hyperactivity is a common symptom of attention deficit disorder.
3. The hyperactivity of the stock market causes constant fluctuations.
4. The hyperactivity of the child made it hard for the teacher to control the class.
5. Hyperactivity is a common side effect of certain medications.