(a) (i) Exercise controls weight
(ii) Strength the bones
(iii) Strength the lungs
(iv) Promote changes in the brain structure
(v) Strength the Heart
(vi) Boost energy level
(vii) Reduce blood sugar level
(viii) Builds strong and healthy muscles
(ix) Motor development
(x) Helps in digestive Process
(xi) Improves neuro muscular co-ordination
(xii) Help in staying healthy
(b) (i) Stress/fatigue
(ii) Chances of overload
(iii) Early maturity
(iv) Can reach too early top form
(v) Less flexibility
(vi) Chances of injury