According to WHO recommendations, a child should be fed exclusively with breast milk through breastfeeding for about 6 months, with subsequent introduction of complementary foods. Other organizations advise introducing complementary foods between 4 and 6 months of life, while continuing breastfeeding or formula feeding during this time. Up to 4 months, a child does not need complementary foods, and the expulsion reflex, in which the tongue pushes out of the mouth everything that is put there, significantly complicates feeding the child.