Why Your Brain Deletes Most of Your Dreams

Every night, your brain runs four to six full dream sequences — vivid, detailed, complete with plot and emotion. By the time you're having your morning coffee, you'll remember almost none of it. This isn't a memory failure. It's a switch, buried deep in your brain, that decides in real time whether a dream gets saved or wiped clean — and most nights, it chooses to erase it. This video traces that switch from its accidental discovery in a 1950s sleep lab, through experiments where scientists physically prevented people from dreaming (and what happened when they were finally allowed to), all the way to a theory that your nightmares might be an ancient rehearsal system that's never actually stopped running 📌 What's covered: 0:00 – The nightly switch 0:35 – The discovery of REM sleep 2:30 – Why the shutdown happens 5:00 – What happens when dreaming is blocked 7:00 – Why your brain bothers dreaming at all If this kind of hidden-mechanics-of-being-human content is your thing, subscribing helps a lot — more videos like this are on the way. #Sleep #Dreams #Neuroscience #Psychology #ScienceExplained