Andrew Huberman· PhD
usually the way we Define it is it's a strongly unpleasant dream that causes some time of daytime um displeasure so in other words some type of daytime dysfunction or distress so everyone can have a bad dream but when you go up into your Waking Life and about your waking day it doesn't seem to bother you too much and maybe we'll just say that's a bad dream when it really becomes a nightmare is when I almost think of it as though you wake up and that blanket of strong nightmare emotion is still wrapped around you and you can feel it you can just know that my emotional state is still heavy and I know exactly where it came from and it was from that Nightmare and throughout the day you don't seem to be able to drobe yourself from that cloaked affect of The Nightmare it drenches you almost that's where it really starts to become unpleasant