Why are children often belly breathers?

Children are often belly breathers because they have a natural, diaphragmatic breathing pattern, which allows for more efficient oxygen exchange and helps keep their breathing relaxed and deep. Their diaphragm is more flexible and their ribcage is less developed, making it easier for them to engage their abdominal muscles during breathing. This method of breathing is instinctual and promotes better overall lung function. As they grow older, many children may adopt more shallow, chest-based breathing patterns due to stress or lifestyle changes.