"The physical exercise caused by suckling at the breast - about six times daily on average for more than 4 months -- may result in increased lung capacity and increased airflow in breast-fed children compared with bottle-fed children," Dr. Ikechukwu U. Ogbuanu told Reuters Health.
Ogbuanu, of the University of South Carolina in Columbia, and colleagues studied the feeding practices of infants born in 1989 on the Isle of Wight in the United Kingdom. At the time, breast feeding was predominantly direct suckling from the breast rather than indirect feeding of pumped breast milk from a bottle, the researchers note.
Absolutely fascinating read. More at this link.