Staring Into Someone's Eyes For 10 Minutes Can Induce An Altered State Of Consciousness

"In 2015, a psychologist in Italy figured out how to induce a drug-free altered state of consciousness by asking 20 volunteers to stare into each other’s eyes for 10 minutes straight. Not only did the deceptively simple task bring on strange 'out of body’ experiences for the volunteers, it also caused them to see hallucinations of monsters, their relatives, and themselves in their partner’s face …” (read more here)