How long should I keep tax returns? In most cases, you should plan on keeping tax returns along with any supporting documents for a period of at least three years following the date you filed or the due date of your tax return, whichever is later.
Myoclonus. These are shock-like, jerking movements. They may occur naturally during sleep, or at moments when a person is startled. However, they can also be due to serious underlying health conditions, such as epilepsy or Alzheimerâs.
Quick Answer. Some of the movements animals make are under conscious control, and are called voluntary movements. By contrast, other movements occur without the animal's conscious decision to do so. These types of movements are called involuntary movements or reflexes. Continue Reading.