Development of the human body used to approximately judge a child's age based on physical development. Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult
Theology of the Body typical of rationalism to make a radical contrast in man between spirit and body, between body and spirit. But man is a person in the unity of his body and his spirit. The body can never be reduced to mere matter”. Pope John Paul II maintained that the stark Cartesian opposition between body and spirit leads to human sexuality as an area for manipulation and exploitation, rather than wonder and unity as he addresses in the Theology of the Body lectures. Pope John Paul II admitted that the work of Immanuel Kant was the “starting ground” of many of his