Because you touch yourself at night.
Old cells make new cells so that when the old ones die there are new ones to replace them.
Usually bones cells
The process of mitosis.
Living cells.
Rudolph Virchow
Every cell division make new cells.Mitosis make diploid cells.Meiosis make haploid cells.
Regeneration. If the cells didn't make new ones, the organism would die.
New cells are created by cell division.
Mitosis
in the bones
Rudolph Virchow
in the bones