He could have had dyspnea because of j
his vision and trouble breathing. A way to protect his airway is by giving him enough oxygen
From the inside or lumen, through the gut wall into the blood
It strengthens your bones to be able to handle large amounts of pressure and weight on your body. I know this isn't related, but when a person breaks their ankle or something else they tend to heal quicker because they're athletes. So one way or another, increasing strength, helps to increase your capacity for exercising.
