Infant growth refers to the rapid physical and developmental changes that occur during the first year of life. During this period, infants typically gain about 5 to 7 ounces per week and double their birth weight by around 5 months. Their length also increases significantly, with an average growth of about 1 inch per month during the first six months. In addition to physical growth, infants experience important milestones in motor skills, sensory development, and cognitive abilities. By the end of their first year, many infants can sit up, crawl, and may even take their first steps. Regular check-ups with a pediatrician help monitor growth patterns and ensure healthy development.