Sleepwalking
How it feels:
This state is the opposite of sleep paralysis — the consciousness is asleep, but muscle paralysis does not occur. In their sleep, people can walk, clean, or even leave the house, which is often very dangerous. In the morning, they don’t remember anything.
Why it happens:
Somnambulism occurs in about 4.6-10.3% of the population, with children affected more often (source). The cause is still unknown, as are methods of treatment.