<span>The diaphragm moves upward, making the chest cavity larger, and air flows in.</span>
<span>The weight of a person depends on the amount of fats and muscles. The weight also depends on the diet of a person and when you are talking about of a grade 7 female, then most of girls are lighter than the boys. The average is approximately in between 90-120 pounds. But just like I said, there are girls who are underweight and other girls are overweight so mostly, the average weight is a normal weight.</span>
That person eats more calories(food) each day compared to you, so you’d most likely gain weight.
Body composition is important because a normal balance of body fat is associated with good health and longevity. Excess fat in relation to lean body mass, known as altered body composition, can greatly increase your risks to cardiovascular dis- ease, diabetes, and more.