Hypnosis has been around since the 18th century.
Around 1770, Franz Mesmer is credited with bringing hypnosis to the public's attention. The Austrian physician was probably aware of earlier societies' use of hypnosis, and he spent much of his career researching hypnosis, hypnotic techniques, and its effects on the human mind. Interestingly, Mesmer referred to hypnosis as "animal magnetism" or "mesmerism," and the latter term is still used occasionally today. (We're guessing you're completely enthralled by this fact.)