Things your body does that science can't Explain

#humanbody #sciencemysteries #facts Why does your body jerk awake as you fall asleep? Five everyday things your body does that scientists still can't fully explain, from yawns to goosebumps. Everyone has felt these, but researchers are still debating why they happen. Here's what's known, what's only a theory, and what nobody has settled. In this video: 0:00 Why you jerk awake as you fall asleep (hypnic jerk) 1:04 Why yawns are contagious 2:04 Why music gives you chills (frisson) 3:10 Why we dream 4:24 Why we get goosebumps All research and sources are linked below. SOURCES ▸ Hypnic jerks: Sleep Foundation https://www.sleepfoundation.org/paras... ; Cleveland Clinic https://health.clevelandclinic.org/wh... ▸ Contagious yawning: Scientific American, "Contagious Yawning: Evidence of Empathy?" https://www.scientificamerican.com/bl... ; "Auditory Contagious Yawning Is Highest Between Friends and Family Members" (PMC) https://pmc.ncbi.nlm.nih.gov/articles... ▸ Music chills: ScienceDaily on Salimpoor et al., Nature Neuroscience (2011) https://www.sciencedaily.com/releases... ; AIP Inside Science, "The Chill of Music" https://www.aip.org/inside-science/th... ▸ Why we dream: Sleep Foundation https://www.sleepfoundation.org/dreams ; Cleveland Clinic https://health.clevelandclinic.org/wh... ▸ Goosebumps: NIH Research Matters, "What goosebumps are for" https://www.nih.gov/news-events/nih-r... ; Britannica, Arrector pili https://www.britannica.com/science/ar... TERMS IN THIS VIDEO ▸ Hypnic jerk: A sudden muscle twitch while falling asleep. Research suggests up to about 70 percent of people have felt one. ▸ Contagious yawning: Yawning triggered by seeing or hearing someone else yawn. Researchers still debate whether it reflects empathy. ▸ Frisson: The shiver or chills some people feel from music. Brain research links it to dopamine release. ▸ Piloerection: The medical term for goosebumps, caused by tiny muscles that pull hairs upright. This video is for general interest and is not medical advice. Which of these have you felt? Tell us in the comments. Subscribe to Inki Paint: facts that make you look twice. #humanbody #bodyfacts #sciencefacts #sleep #dreams #goosebumps #yawning #psychology #neuroscience #unexplained #facts #mindblowingfacts