Students should (a)----- the rules of health. They should rise (b)----- bed early in the morning and go out for (c)------ walk. Besides, they should have to perform all those things which are necessary for (d)----- preservation of health. They should take part (e)----- sports and games regularly. They are essential (f)----- their physical and (g)----- health. They should also follow (h)------ rules (i)----- cleanliness because it is as (j) ------- as physical exercise.