Life can be stressful. When it is, we respond by becoming ‘shallow breathers’
taking short shallow breaths without filling up the entire lung and chest cavity. We
breathe using just a portion of our full lung capacity. We do this unconsciously in
response to stress or even intense concentration. Unfortunately, as a result we
reduce our vital lung capacity and the amount of oxygen that is available to our
system, including our brain. This can cause headaches, impaired alertness and
fatigue. When the brain does not receive enough oxygen, all basic functions are
affected including concentration and memory.