In terms of development, the growth of the body. To focus on the development the muscles to grow in size with more strength. Development of a blood vessel, the blood twist as flexible as well. Development of the heart, the heart grow in size with more strength, heart rate low. Development of hypertension, the blood pressure within the normal range. Development of the respiratory system, the lungs healthy respiration rate lower. Development of relations between the nervous system, muscular system cause skills to do the activities. Development of the digestive system and digestive system are working to optimize good health.