It is Glycolysis.
a word from (Glyco from glucose), (lysis from breaking)
<span>A solution is hypertonic to a cell if it has a higher solute (dissolved substance) concentration than the cell does. As a result, it also has a lower concentration of water than the cell does. Cell membranes and plant cell walls are semipermeable barriers, which means that certain molecules can diffuse through them, while other molecules can not.</span>
It can be inferred that muscle cells in athletes produce more ATP than muscle cells of those who live sedentary lifestyles.
They may have evolved from a common ancestor.