The basic rhythms of Nature that left their imprint on the existence of all living organism on Earth, arose under the influence of the Earth's rotation relative to the Sun, the Moon and other planets and stars of the Universe. This periodicity gave rise to the rhythm that has become essential for their life. Life is a continual chemical process of building up and breaking down of organic substances, that results from the substance exchange between an organism and the environment . This makes it impossible for a living organism to exist without the external environment. The book discusses hidden moments from the life of the fetus.Research has been conducted since 1977.The present study has been the first in the world's medicine andbio-rhythmnology to detect and establish the daily rhythms of cardiac and motor activity in the human fetus.