The magic of fresh air
An ounce of oxygen leads to the bounce in your body. As you inhale, your lungs pluck the oxygen from the air, which includes nitrogen and other gases like carbon dioxide. The lungs then circulate the oxygen through your body. The pure oxygen is absorbed by your red blood cells into your haemoglobin and these tiny sponges of oxygen bob in your bloodstream and feed the tissues (muscle, bone, nerves). A group of cells form a tissue, and a group of tissues form your organs — heart, lungs, stomach, etc. These sponges squeeze out the oxygen and absorb the waste carbon from your tissue. They then bob back to your lungs from where the waste gas is expelled as you exhale.
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