Without it, your cells cannot make much energy and their metabolism is less effective.
Oxygen and Energy
Within every cell, there are thousands of little power-plants called mitochondria.
These are ‘power plants’ that generate energy in the form of ATP. In order to fire up the power-plants to make the energy molecule ATP, in a process called oxidative phosphorylation (OXPHOS)c, you will need a generous supply of oxygen to the cells...