Their lungs are cheerfully cranking out carbon dioxide for the chance to do it again, so running out of residual volume or pulling nitrogen into gas has a lot o

Their lungs are cheerfully cranking out carbon dioxide for the chance to do it again, so running out of residual volume or pulling nitrogen into gas has a lot of give. So you're the one with the strong negative response when people suggest hitting an exercise heart rate and recovering with solid food (root vegetables,) eh?