When we breathe, the body absorbs 21% of oxygen from the air. Under normal circumstances, that is adequate for what the body needs to saturate the red blood cells. The red blood cells then transport the oxygen to the rest of the cells in the body. Oxygen is essential for proper cellular function.
Millions of people suffer a concussion or brain injury every year. The key to recovery from head trauma is to understand what happens during a brain injury and why the patient has the symptoms he or she is experiencing.