The number of breaths a person takes in a minute is related to age, exercise, and the presence of illness. When quiet, adults are usually 16-20 breaths/minute, children breathe faster than adults, and newborns even faster, usually 20-25 breaths/minute. The number of breaths in a normal person is also a data indicator of human health. An increase in respiratory rate occurs when the body is stressed or undergoing strenuous exercise. If you are at a high altitude, your breathing will also speed up due to the lack of oxygen in the environment. Suffering from respiratory failure, upper respiratory tract diseases, pneumonia, cardiac insufficiency, hyperthyroidism and other diseases can also cause changes in respiratory rate to some extent. If your respiratory rate is abnormal in non-stressful and exercise situations, it is recommended that you go to the hospital for a physical examination.