1.   Then Caroline would have to wallop my back to stimulate a return to normal breathing.

2.   When we faint we return to normal breathing and so fainting is a fail-safe mechanism for hyperventilation control.

3.   During normal breathing, air flows freely in and out of the lungs.

4.   It has given the gift of normal breathing to people who used to feel like they were trying to breathe through a straw.

5.   Overweight children could also suffer from respiratory problems because the fat around the respiratory tract hinders normal breathing.