Question

How many times does a lung contracts and expands in a minute?

Answer 1

It depends upon your age and activity level. Children tend to have more rapid breathing rates. For example, newborn babies often breathe 30-60 times per minute. Toddlers might breathe 20-30 times per minute. Older children and adults, when resting, usually breathe about 12-20 times per minute. Over the course of a day, that adds up to 17,000-30,000 breaths per day