Question

When does a breathing rate differ?

Answer 1

Hey there,

Normal breathing rate=15-18 times/minute
Breathing rate differs with the demand of Oxygen in body.
When we do vigorous exercise like running, swimming, etc the demand for oxygen increase and it may go upto 28-30 times/minute.
When we are resting or sleeping, the demand of oxygen drops down and reaches to 12-15 times/minute. 

PLEASE MARK AS BRAINLIEST IF HELPFUL!!!

Answer 2

The respiratory rate also known as the ventilation rate, ventillarate ,ventilation frequency, pulmonary ventellarate ,or breathing frequency is the rate of ventilation that is the number of breaths taken with in a set amount of time