For infants, toddlers and teenagers who take part in physical exercise, it can help the proper development of the skeleton and bones, muscles, joints and strength . High-impact exercises performed safely and at the right intensity for specific age groups can increase bone thickness, density and strength, without having any effect on length growth as long as the exercise performed is not too intense or involves too high impact or weight-bearing exercises. http://www.danoneinstitute.org/objective_nutrition_newsletter/on79.php When exercise is too intense and there is too much pressure on the bones, cartilage, ligaments and tendons, it can be harmful to your child's health and can influence the growth rate. “High-impact sports and the intense and repeated training they require can generate psychological stress from competition and recurring microtraumas. This may be responsible for a temporary halt in growth in weight and height, due to disturbances in neurohormonal regulation in the hypothalamus and the hypothesis” according to the (danoneinstitute). http://www.danoneinstitute.org/objective_nutrition_newsletter/on79.php Children have disproportionately long legs compared to the rest of their body, which means their body is unbalanced and this can therefore affect the coordination of children's limbs. Puberty begins at different ages for boys and girls. Puberty begins at age 12 for girls and ends at age 16, while for boys puberty begins at age 14 and ends at age 18. Differences in physical attributes between boys and girls occur during puberty in response to changes in the hormones produced by the body. For girls estrogen is more important and for boys testosterone is more prescribed. In adolescence, boys and girls can learn to do sports-related movements at the same speed. It just depends on the time and effort they put into their sports and whether or not they like the sport they are playing, which has a huge impact on how well someone performs. learn. Boys and girls learn spatial awareness, coordination and control at the same age between 7 and 13 years old and quickly learn these skills between 10 and 13 years old, this can happen by doing activities such as jumping rope and multi-directional forms of running, jumping , jumping and playing tig http://www.ukessays.com/essays/physical-education/developing-fundamental-movement-skills-physical-education-essay.php http://www.lebertfitness.com/Engage/YouthFitnessGuyBlog /tabid/325/post/Coordination/Default.aspx 5