It is impossible to pump breathing

[Glebchcd]

Hello For a long time looking solution for the Internet , the family, friends , because no one gave a plausible answer . The story is : the strength of what I am capable of - 300 meter run. Then shortness of breath. at a discount to the huge size of my age , the result is no . Dad said about the curve nasal septum, but I do not know how it affects .