You won't see results from weightlifting overnight.
You want to give each muscle group a day of rest in between weightlifting.
Weightlifting is also used as a form of weight management.
The extreme development of the muscles in the weightlifting athlete and in the arm of the blacksmith is the result of increased functional activity with a corresponding increase in the vascular supply; this exercise may produce an over-development so excessive as to be classed as abnormal.
The topic of children and weightlifting continues to be controversial.