What is physical exertion?

Famous quotes containing the words exertion and/or physical:

    I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active—not more happy—nor more wise, than he was 6000 years ago.
    Edgar Allan Poe (1809–1845)

    It seems to me that we have to draw the line in sibling rivalry whenever rivalry goes out of bounds into destructive behavior of a physical or verbal kind. The principle needs to be this: Whatever the reasons for your feelings you will have to find civilized solutions.
    Selma H. Fraiberg (20th century)