It wasn’t all that long ago that people whose hips or knees were riddled with arthritis or damaged through earlier injuries had to give up some physical activities and accept a diminished quality of life. That is no longer the case. Millions of Americans now maintain active lifestyles well into advanced age due to joint replacements.

Oxygen keeps us healthy and alive, and it might mean more to your body than you think. Important for more than just breathing, our tissues also need oxygen to function properly and heal.