Children waking up in the morning pain in the hands and feet may be caused by excessive exercise, but also may be related to other factors such as calcium deficiency. 1. Excessive exercise, if the child is often strenuous exercise, excessive fatigue, may lead to the accumulation of lactic acid in the body, so there may be children wake up in the morning pain in the hands and feet, and there may be fatigue, lack of spirit and other reactions. 2. Other factors, if the child’s body lacks calcium, may lead to bone growth and development is affected, some patients may also have growing pains, so may produce morning pain in the hands and feet symptoms. If there are obvious symptoms of pain in the hands and feet, it is recommended to take the child to the doctor in time for examination and treatment.