Tachypnea is a medical term for rapid breathing. It is normal for people who are exercising or during significant physical exertion but can indicate a serious health condition is it occurs at rest. There are a lot of reasons for tachypnea, not all of them severe, but it doesn't just happen on its own.
Tachypnea is the medical term for rapid, shallow breathing. When at rest, a healthy adult breathes between 12 and 20 times a minute. Breathing rates for athletes who are very fit can decrease to 8 breaths per minute. Tachypnea begins when an adult breathes more than 25 times a minute when at rest.
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