Breast milk is a very nutritious food that improves the health of children and helps prevent disease. The baby should be seated on his mother’s lap with the body and head between 45 ° and 70 ° and should not be lying in his bed. The correct posture of the baby during breastfeeding allows him to breathe through his nose, to tighten his lips around the nipple, to swallow correctly and to stimulate the development of his jaws. Orthodontic bottle (which is different from normal bottles) or breastfeeding in a bad position to allow air to escape through the mouth, which leads to breathing through the mouth known to be harmful.