Jennifer Aniston, the FRIENDS star, used to suffer from somnambulism or sleepwalking, which once scared her ex-husband Brad Pitt. One night, she set off the house alarm while sleepwalking and woke up outside by the pool equipment in the back. The incident terrified Pitt, who had heard the alarm but couldn't find her. Fortunately, Aniston has since controlled her sleepwalking and no longer suffers from it. She also dealt with insomnia in the past, but a regular bedtime routine helped her achieve sounder sleep.