Hey Reem Al Khatib,
Here are some signs of hyperactivity:
Often fidgets with hands or feet or squirms in seat.
Often gets up from seat when remaining in seat is expected.
Often feels restless.
Often has trouble playing or enjoying leisure activities quietly.
Often “on the go†or often acts as if “driven by a motor.â€
Often talks excessively.
And it is harmful because it could be related to ADHD or Attention-deficit hyperactivity disorder.
Reem
this is completely random but I have to ask, why is hyperactivity a bad thing? and could you do an article about signs of hyperactivity?