IN the long-term care of children with convulsive disorders we have become increasingly aware of the frequent occurrence of a significant degree of anemia in those who have breath-holding spells.

Facebook page MEDspiration posted footage of an air hose being used to inflate dead sheep and cow lungs, to give an example of how rapidly the lungs expand when humans take a deep breath.

This typically causes symptoms like: coughing spells that bring up mucus or phlegm ... This test measures how much air you exhale. You take deep breaths into a tube that a computer monitors ...