I would say that the brain stem would automatically send a message to the muscular rib cage & your diagphragm to make them work harder.
Hope this helps :))
IT IS BISEXUAL SINCE IT HAS BOTH MALE AND FEMALE PARTS
One million nine hundred eighty-nine thousand
Hope this helped
Do you need specific sources on this for a paper? I️ would use easybib it is a great source to get bibliographies done quick.