REM Behavior Disorder
REM Behavior disorder happens only 1/100th the time of sleep apnea and is essentially the opposite of Sleep Paralysis. During REM sleep you normally don’t move. This is called atonia, which is the normal paralysis of your voluntary limbs during the twenty percent of the time asleep when you are dreaming. With REM behavior disorder, instead of experiencing atonia you move around and perhaps act out your dreams. This can involve minor leg movements or crying out in your sleep.