Question

Count how many times in one minute do you breathe in and breathe out?

Answer 1

Hint: Breathing is the process of moving air in and out of lungs to facilitate gas exchange with the cells in the body. Breathing brings inside and carbon dioxide out of the body. All aerobic organisms need oxygen for cellular respiration to break down foods for energy and produce carbon dioxide as a waste material. The number of breaths in and breathe out per minute is known as the breath rate.

Complete explanation:
For humans, the typical respiratory rate of a healthy adult is $$12-16$$ breaths per minute. The respiratory centre which is located in the brainstem sets the respiratory rhythm as two seconds for an inhalation and three seconds exhalation. This gives the average rate of $$12$$ breaths per minute.
The breath rate is usually monitored using a sensor for patients during magnetic resonance imaging scan. Some other methods to measure the respiratory rate are impedance pneumography and capnography. They are commonly implemented in patient monitoring.
The respiration rate may vary during conditions such as fever, illness or other medical complications. It also varies according to age. For infants from birth to $$6$$ weeks it is $$30-40$$ breaths per minute, for children of age $$6$$ to $$10$$ years it is $$17-25$$ breaths per minute, for adults it is $$15-18$$ breaths per minute. Elderly of $$65$$ years and above have the average of $$12-28$$ breaths per minute.

Note:
Sick people tend to have a faster respiratory rate. It includes people suffering from asthma, diabetes, heart issues and cancer. When the body breathes rapidly, deficiency of carbon dioxide occurs which in turn reduces the delivery of oxygen to cells. This may cut down the time that the body is able to hold its breath making the automatic halt between breath in and breathe out almost absent.