What is the ability of the body to function successfully and efficiently during physical activity?

I believe this question should be in Health, however, I'll answer it to the best of my ability.

Physical fitness.  

Physical fitness can be achieved through a set diet, physical excersise (of course), rest, and many cardiovascular exercises. It is the ability of the body to successfully function efficiently during PA. 

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.