Oxygen, I sit slowly taking it all in, breath by breath. Unknowing if the next breath will be easier or more difficult than the one before. With each, a painful reminder of the ones that had come before, the lingering mucus still occasionally clogging up my trachea. My mind relapsing on the pain, pressure and trials that it took to take in every ounce of oxygen over the last week. My lungs cry out as each drop of pure air reaches them, as each agonizing cough clears the passageway to allow more oxygen - they rejoice.