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
Catholic theology of the body human existence, Gregory uses the concept of light: God is the most sublime light, He cannot be penetrated or defined. He is followed by the angels, and then by human beings. Man is the image of God but only in his soul, not in his body. He is therefore also a mixture of eternal and temporal. The grace of God created the soul of man. His body was created for suffering, to overcome his pride. The soul is destined to lead the body and be purified like gold in a fire. The soul is oriented towards God and yearns to