Q:

Why do people sneeze twice?

A:

Quick Answer

There is no definite scientific answer to why most people sneeze two or three times in one go. However, people who sneeze more than three times most likely have special immunological or neurological characteristics. For instance, they may have allergies, notes Scienceline.

Know More

Full Answer

Sneezing happens when something irritates the nose or throat's mucous membranes. Sneezing helps humans eject harmful substances from their noses and mouths. Some people are genetically predisposed to sneeze at the sight of a bright light. This condition is called the photic sneeze reflex. Snatiation is a term for sneezing after a heavy meal.

The most common cause for people to sneeze is catching a cold or being ill with a flu. People with allergies sneeze to expel dust, pollen, mold and animal dander. Certain nose sprays, which contain corticosteroids, can also cause sneezing. Polluted air, spicy foods and strong emotions can bring on a sneezing fit, as can drug withdrawal.

The process of sneezing engages many muscle groups from the abdomen through the chest and to the face. People always shut their eyes when sneezing. During a sneeze, the air travels at a speed of approximately 100 miles per hour and disperses about 40,000 droplets, according to Science Line. This is one of the ways diseases spread from human to human.

Learn more about Human Anatomy

Related Questions

  • Q:

    Why do some people float better than others?

    A:

    How people float is based on their specific density, so people who float have a lower density than people who don't float well. Specifically, people with a higher fat content in their bodies float better than people with a higher muscle content.

    Full Answer >
    Filed Under:
  • Q:

    How do you make your hand fall asleep?

    A:

    When people discuss parts of the body falling asleep, they are generally referring to tingling or numbness in those body parts. That tingling or numbness can be caused by a number of things, but is most commonly caused by either cutting off blood flow or nerve damage, and it is not recommended to attempt to make it happen intentionally.

    Full Answer >
    Filed Under:
  • Q:

    Why can't you tickle yourself?

    A:

    HowStuffWorks explains that people cannot tickle themselves because the brain is aware that the sensation of touch is impending, and it loses the effect of surprise that usually accompanies the sensation of being tickled. The brain's cerebellum is responsible for deciphering whether a touch is familiar or unexpected.

    Full Answer >
    Filed Under:
  • Q:

    Why do nails grow faster in summer?

    A:

    According to Broken Secrets, fingernails and toenails grow faster in the summer because people are exposed to more daylight then. In daylight, the human body produces more vitamin D, which is essential for healthy growth in nails and hair. Cold environments and smoking can slow nail growth.

    Full Answer >
    Filed Under:

Explore