system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Hypnotism.

I saw a old post on this without any satisfactory answers.
gpt
When a person becomes really comfortable and safe feeling they enter a state that is a precursor to sleep. This state is called the hypnagogic state. As certain parts of their brain that criticize input begin to enter a resting state they become more susceptible to suggestion because their brains are doing less fact checking.