I'm stealing this quote...

Here's a quote from No Quarters that I'm going to copy here, just because.

A strong body makes the mind strong. As to the species of exercises, I advise the gun. While this gives moderate exercise to the body, it gives boldness, enterprise, and independence to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be the constant companion of your walks. Thomas Jefferson, Encyclopedia of T. Jefferson, 318, Foley, Ed., reissued 1967.