At any given moment, your body contains (approximately) 2.5 trillion red blood cells. Did you know that your bone marrow is responsible for creating them? In fact, your bone marrow has to create about 2.5 million new red blood cells every second. That’s just RED BLOOD CELLS. Altogether, your body produces around 25 million new cells every second.
The toenails grow at @ 1/4'th the speed of the fingernails!