This is the lowest stage of sleep, where a person is easily awoken.
What is Stage 1 of Sleep?
What are hallucinogens?
What is meditation?
This stage of sleep is the only one where complex dreams are possible.
What is REM Stage?
What is alcohol?
What is hypnosis?
What is Insomnia?
Cocaine is an example of this category of drug.
What are stimulants?
This altered state can be experienced every night if you're living right.
What is sleep (dreams)?
This sleep disorder is characterized by loud screaming and movement.
What are night terrors?
This category of drug is good at bringing you down and making you calm.
What are depressants?
What is tolerance?
This is the name of the phenomenon where a person wakes up from REM sleep unable to move.
What is sleep paralysis?
What is marijuana (cannabis)?
This is the effect of being aware of the stimuli in and out of your body.
What is consciousness?