When a person has eaten very much, when he has drunk much water, when he has worked much with the earth, his breath is very heavy. You can hear it when he is sitting at dinner, or wherever he is. It becomes heavy from its contact with the matter, just as the air in a town becomes heavy from its contact with the houses, the walls. In the country, in the jungle, it is light because it is free. The people of normal life have a light breath. Normal means eating a normal amount, drinking a normal amount, healthy. They live longer. The material person, who eats very much, drinks very much, indulges in all the pleasures and comforts, has a short life. We always see that the athletic people, whose breath is normal, healthy, live long.