Disturbances in sleep cycles lead to "feeling of falling" in your sleep. Scientists call this process the myoclonus. A group of researchers from the University of Minnesota tried to explain how to avoid unpleasant feelings of twitching during sleep, writes The Daily Mail.
The sleep is divided into REM and slow wave sleep. Falling asleep, the person is immersed in deep sleep. In the fast phase we have dreams, accompanied by eye movements. At this time the paralysed muscles, scientists do not recommend to Wake the people in fast phase of sleep.
Usually sudden movements, when a person sleeps, talk about crashing in sleep cycles. Enough sleep to get it. However, in some cases, shock and impact can indicate the development of Parkinson's disease. Scientists noticed that every second person experiencing twitching in his sleep, after 10 years, appear neurological disorders.