Do you know all the ways you should measure your child?s growth? Everyone naturally think of height and weight, but from birth to 5 years, your child should reach milestones in how he plays, learns, speaks and acts. Keeping a child healthy is a big job but Exercise helps build and maintain healthy bones, muscles, and joints; control weight; build lean muscle; reduce fat; prevent or delay the development of high blood pressure; and reduce blood pressure in some adolescents with hypertension. Read all about common childhood aches, pains, and illnesses, and how to take care of your child's body from teeth to toes in this section. Learn more about ways to improve the health and safety of your child, and how to help equip them to have better lives.