Why Do You Overthink at Night?

Lying awake at 3 AM, replaying arguments that never happened? Your brain isn't broken. It's running a smoke detector built for lions, in a room that has gone silent. Here's the science of why bad thoughts get loud at night, and what actually helps. CHAPTERS 0:00 The movie nobody ordered 0:36 The brain that never switches off 1:39 Why it picks the worst case 2:45 Social pain and the simulator 3:54 The white bear trap 5:08 How your phone makes it worse 5:34 What actually works 6:13 It's not broken IN THIS VIDEO The default mode network: what your brain does when you stop focusing The negativity bias and the "smoke detector principle" Why social worries hurt like physical pain Ironic process theory: why "stop thinking about it" backfires A five-minute bedtime habit tested in a sleep lab SOURCES Raichle et al. (2001), "A default mode of brain function", PNAS Killingsworth & Gilbert (2010), "A wandering mind is an unhappy mind", Science Nesse (2001), "The smoke detector principle", Annals of the New York Academy of Sciences Eisenberger, Lieberman & Williams (2003), "Does rejection hurt?", Science Schacter & Addis (2007), constructive memory and imagining the future, Phil. Trans. R. Soc. B Yoo et al. (2007), "The human emotional brain without sleep", Current Biology Wegner et al. (1987), the white bear experiment, J. Personality and Social Psychology Ansfield, Wegner & Bowser (1996), "Ironic effects of sleep urgency" Wegner, Wenzlaff & Kozak (2004), "Dream rebound", Psychological Science Masicampo & Baumeister (2011), "Consider it done!", J. Personality and Social Psychology Scullin et al. (2018), "The effects of bedtime writing on difficulty falling asleep", J. Experimental Psychology: General This video is for general information and is not medical advice. If poor sleep or anxious thoughts are affecting your life, talk to a doctor or a mental health professional. #sleep #psychology #neuroscience