Children grow rapidly between ages 3 and 6 but less quickly than in infancy and toddlerhood.
Child’s shape becomes more streamlined
On average, children add 2 to 3 inches in height and about 5 pounds in weight each year in early childhood.
Children gradually become thinner and leaner
Boys continue to be slightly larger than girls; have more muscle tissue
Individual differences in body size are more apparent during early childhood than in infancy and toddlerhood.
Muscular and skeletal growth progresses, making children stronger.
Cartilage turns to bone at a faster rate. Bones harden , giving the child a firmer shape and protecting the internal organs.
Posture and balance improve, fostering gains in motor coordination.
The increased capacities of the respiratory and circulatory systems build physical stamina and, along with the developing immune system, keep children healthier.