1. Preventing Yourself from Sneezing
When you close your mouth and pinch your nose trying to prevent a sneeze, the level of your intracranial pressure rises immensely. Thus, the blood flow to your brain is disrupted and both your nervous tissues and blood vessels are compressed.
This entire process can result in many health issues, such as headaches, damaged vessels, or even hearing problems. You should never stop yourself from sneezing.