When you hold in the high pressure that builds in your respiratory system before a sneeze, you send some air into your ears. Some of these injuries include: Ruptured eardrum Experts say holding this additional pressure inside your body can cause potential injuries, which can be serious. Holding in a sneeze greatly increases pressure inside the respiratory system to a level of about 5 to 24 times that caused by the sneeze itself. When a person is exhaling hard during strenuous activity, they have a windpipe pressure that’s much less, only about 0.03 psi. In a 2016 study, scientists measured a pressure level of 1 pound-force per square inch (1 psi) in the windpipe of a woman who was sneezing. This includes your sinuses, nasal cavity, and down the throat into your lungs. When you sneeze, your body produces pressure in your respiratory system. Why are sneezes so powerful? It’s all about pressure. Sneezing is a powerful activity: A sneeze can propel droplets of mucus from your nose at a rate of up to 100 miles per hour!
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