Body Composition

             After reading the book, I found that after the fourth prenatal month is when growth starts to slow down. Growth then speeds up during adoloscence. At an early adult age growth then stops. Once we become older adults we start shrinking.
             When the sperm and the egg form the zygote it only measures 0.14 millimeter in diameter. The fetus then continues to grow up to 5000 times longer. The mother then reaches her fourth prenatal month and growth decelerates. Following gestation boys measure 50.5 centimeters (20 inches) long, girls measure about 49.5(19.75 inches) long. By the first year the length is expected to increase by fifty percent. At the end of the first year boys are 30 inces long and girls are 29.25 inches long. The average increase in body length during the second year is 4.75 inces. After the second year we continue to grow, but at a much slower rate. There is an exception, a midgrowth spurt, can happen between the ages of six and eight. Girls frequently experience midgrowth spurts. During adolescence we grow taller rapidly. 20% of adult stature is attained during adolescence. Males grow four inches and girls grow three inches per year. When the female has reached the age of 16 1/2 they have attained 98& of adult stature. Males attain 98% of adult stature at the age of 18. The final 2% of growth for females is reached by the age of 18. Males reach this last 2% by the age of 20. Our stature remains stable between the ages of thirty to forty-five. Above forty-five there is an apparent decrease height. This decrease is caused by intervertebral disk degeneration and decreased thickness of joint cartilage.
             Our body goes through a roller coaster of stature changes. We grow fast at times then slow down other times. We have rapid growth spurts. Then stop growing, our stature remains stable. After growing to our adult stature and reaching forty-five plus years we begin to decrease in stature. Although we cannot tell exactly how tall...

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