What makes people dizzy when they spin?
Rolling down a hill or spinning around in endless circles causes dizziness or vertigo because hair-like sensory nerve cells in our ears send wrong messages to our brain. The motions of our bodies are detected by the vestibular system found in the upper part of our inner ear. The vestibular system senses whether we are standing up or lying down. When we spin in circles or get up too fast from the couch, we feel dizzy and lightheaded due to the vestibular system’s nerve reactions to these unusual motions. Read the rest of the explanation on www.uselessknowledge.
