because your lungs arnt that big
Digoxin makes your body to work more in a given amount of oxygen or it make your heart use less oxygen for given amount of work.
a-plus answer: standard metabolic equivalent Aerobics, Aerobic capacity is defined as the maximum amount of oxygen the body can us during a specified period of time. So it would Be Aerobics.
oxygen
Because your body needs oxygen. They have a dent to store oxygen and carry it from the lungs, to the rest of the body.
Carbon dioxide is not poisonous but since it isn't oxygen it will kill you in large quantities. carbon monoxide however is actually poisenous, basically it reacts with your body and reduces the amount of oxygen your blood can deliver.
Smoking increases the amount of Carbon Monoxide in your body and you have a small amount of Oxygen in your body, so not enough of Oxygen goes to your brain and organs and you have less energy.
the amount of blood and oxygen in your body
in large amounts
obesity
Helium, is not oxygen, and as such a large presences of helium in the body can asphyxiate and cause death.
altitude
VO2 Max is the maximum about of oxygen that is needed by a body, or that the body can take in. By increasing this number, you can run, swim, and do other activities faster.