Inclusion Criteria:  Gestational age ≥38 weeks, without any medical support and normal pregnancy development.  Exclusion Criteria:  Newborns with gestational age <38 weeks. Newborns with intrauterine growth restriction. Evidence of perinatal depression (hypoxic ischemic encephalopathy). The need for respiratory support or oxygen therapy in the first 10 minutes of life. Suspected or known brain malformations or congenital cyanotic heart disease. Birth complications (e.g. vacuum extraction or forceps application). Newborn delivered through cesarean section with previous attempts of normal vaginal delivery.