Ozone, which is also known as trioxygen, is a chemically bonded compound, and contains three oxygens.
A smaller person would have a lower metabolism rate than a taller person.
Fluid shift from vascular to interstitial can cause the water in blood is decreased, causing the other component level in blood seems to be increased(hemoconcentration).
In this case, hematocrit is one of the marker in laboratory that can be used for assessing hemoconcentration.