Sleepwalking has occurred among nearly one in three Americans , study says . Score: 6 Stress and lack of sleep can aggravate sleep disorders . Medications are available for more serious cases .
Sleepwalking has occurred among nearly one in three Americans , study says . REM behavior disorder affects less than 1 % of the population , group says . Stress and lack of sleep can aggravate sleep disorders . Medications are available for more serious cases .