Why Do We Have to Pretend to Sleep to Fall Asleep?

Every night, you close your eyes, stop moving, get comfortable… and basically pretend to be asleep until somehow, without noticing the exact moment, the pretending becomes real. But why can’t the brain simply switch sleep on? In this video, we explore what actually happens inside your brain and body during the strange transition from wakefulness to sleep. From adenosine and your circadian clock to melatonin, body temperature, the VLPO, GABA, orexin, brain waves, hypnagogia, sleep spindles and K-complexes, falling asleep turns out to be far more complicated than simply “switching off.” You’ll also learn why your thoughts become increasingly strange as you drift toward sleep, why you sometimes feel like you are falling and suddenly jerk awake, why you can technically be asleep while believing you are still awake, and why desperately trying to fall asleep can sometimes keep you awake even longer. Sleep is one of the rare biological processes that works best when you prepare for it… and then stop trying to control it. By the end, that familiar nightly ritual of lying completely still with your eyes closed may feel much stranger than it did before. Written, narrated, illustrated and edited by Tany Explains. ⚠️ Educational Disclaimer: This video is created for educational and informational purposes only. It is not intended to replace professional psychological, medical, or therapeutic advice. Research & Sources: • Biabani, N. et al. (2023). “The neurophysiologic landscape of the sleep onset: a systematic review.” Journal of Thoracic Disease, 15(8), 4530–4543. DOI: 10.21037/jtd-23-325 • Borbély, A. A. (1982). “A two process model of sleep regulation.” Human Neurobiology, 1(3), 195–204. • Borbély, A. A. (2022). “The two-process model of sleep regulation: Beginnings and outlook.” Journal of Sleep Research, 31(4), e13598. DOI: 10.1111/jsr.13598 • Saper, C. B., Chou, T. C., & Scammell, T. E. (2001). “The sleep switch: hypothalamic control of sleep and wakefulness.” Trends in Neurosciences, 24(12), 726–731. DOI: 10.1016/S0166-2236(00)02002-6 • Porkka-Heiskanen, T. & Kalinchuk, A. V. (2022). “Adenosine, caffeine, and sleep-wake regulation: state of the science and perspectives.” Journal of Sleep Research. Research examining adenosine as a sleep-regulatory signal and caffeine’s antagonism of adenosine receptors. • Do, M. T. H. & Yau, K. W. (2010). “Intrinsically photosensitive retinal ganglion cells.” Physiological Reviews, 90(4), 1547–1581. DOI: 10.1152/physrev.00013.2010 • Kräuchi, K. et al. Research on thermoregulation and sleep onset, including the relationship between distal skin warming, heat loss, and the initiation of sleep. • Haghayegh, S. et al. (2019). “Before-bedtime passive body heating by warm shower or bath to improve sleep: A systematic review and meta-analysis.” Sleep Medicine Reviews, 46, 124–135. DOI: 10.1016/j.smrv.2019.04.008 • Astori, S., Wimmer, R. D., & Lüthi, A. (2013). “Manipulating sleep spindles — expanding views on sleep, memory, and disease.” Trends in Neurosciences, 36(12), 738–748. DOI: 10.1016/j.tins.2013.10.001 • Halász, P. (2016). “The K-complex as a special reactive sleep slow wave — A theoretical update.” Sleep Medicine Reviews, 29, 34–40. DOI: 10.1016/j.smrv.2015.09.004 • Cuellar, N. G. (2015). “Hypnic Jerks: A Scoping Literature Review.” Sleep Medicine Clinics, 10(3). DOI: 10.1016/j.jsmc.2015.05.010 • Rezaie, L. et al. (2018). “Paradoxical insomnia and subjective-objective sleep discrepancy: A review.” Sleep Medicine Reviews, 40, 196–202. DOI: 10.1016/j.smrv.2018.01.002 • Espie, C. A. et al. (2006). “The attention-intention-effort pathway in the development of psychophysiologic insomnia: a theoretical review.” Sleep Medicine Reviews, 10(4), 215–245. DOI: 10.1016/j.smrv.2006.03.002 • Jansson-Fröjmark, M. et al. (2022). “Paradoxical intention for insomnia: A systematic review and meta-analysis.” Journal of Sleep Research, 31(2), e13464. DOI: 10.1111/jsr.13464 #Psychology #Sleep #SleepScience #Neuroscience #Brain #FallingAsleep #HumanBrain #PsychologyFacts #SleepPsychology #CircadianRhythm #Melatonin #Insomnia #TanyExplains