Poltergeist activity refers to a type of paranormal activity in which physical objects are manipulated by an unseen force. The objections are usually moved violently and are often damaged or destroyed in the process. Poltergeist is German for "noisy ghost", however, most believers in the paranormal no longer believe that poltergeists are spirits of the dead. Reported accounts of poltergeist activity have often taken place in the homes of girls approaching puberty. Some researchers have suggested that the energy originated from the girls rather than any kind of supernatural being.