the children in some physical activities, physical activities, not
period, organs and tissues have not yet matured; unsuitable
. According the theory, the child's heart the increase and five years-old the too after addition, the tough movement, because the pull last too and strong soft-tissue
Children can’ train muscle salt, and fatigue. muscle
Children under the of could not play mature very sprain and collision hurt.
Scooter games unsuitable When children play position is on injury, parents play in a and spacious area.