(noun) The condition of being fit, suitable or appropriate.
"The reason fat men are good natured is they can neither fight nor run."
"No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable."
"It is a disgrace to grow old through sheer carelessness before seeing what manner of man you may become by developing your bodily strength and beauty to their highest limit."
"Regarding the fitness craze: America has lost its soul; now it's trying to save its body."
"A fit, healthy body—that is the best fashion statement"