Let’s start with the fact that the surrogate mother already had a positive experience of pregnancy and childbirth. So, before becoming a surrogate mother, all candidates are checked for compliance with the requirements. Their age must be from 21 to 40 years old, they must have a stable mental and physical condition, they must have their own child carried and born by their own hands and without complications. This is necessary to minimize the possibility of negative effects of pregnancy on the surrogate mother. The second fact is that the surrogate mother undergoes a trial run before the pregnancy begins. Before embryo transfer, surrogate mothers are given estrogen and progesterone for two weeks. This is necessary to simulate pregnancy and make sure that the lining of the uterus reacts properly and that there are no other problems. The third fact is that a woman can be a surrogate mother more than once. How many times a woman will be a surrogate mother depends on her health, age and ability to successfully bear and give birth to a child. For many surrogate mothers, this is a way to help those who are not lucky enough to be able to do it on their own.