Physiological delivery
Physiological birth - this is the birth, in which the child is born in the proper time and in a natural way. That is, physiological births go through three stages (disclosure, expulsion and succession), and after the birth of the child, the placenta is separated and the birth of the afterbirth occurs.
To physiological birth was normal, the woman in labor should know what is happening at each stage, their average duration and, of course, what feelings, including painful ones, they accompany.