When our airways are too small to allow the air to leave our lungs quickly enough, we develop asthma, and wheezing is the result of the air becoming turbulent when it is expelled too quickly. Comparable like switching from a regular drinking straw to a thin cocktail straw: considerably more difficult to transport fluids. However, a number of factors, such as having narrower airways at birth or experiencing inflammation or mucus when ill, can also cause that narrowing. Kids' airways expand as they get older. This frequently helps with asthma problems.
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