Well, i'm age 14, weigh 7 and a half stone, i'm 5'3". I can run forever if i want, just as long as i run at a slow steady speed. I can do 100m in 17-18 seconds and i a fat little git. I spend most of my time on my computer, and the only exercise i get is walking around my school (i reckon that's about 1mile a day) and walking the dog, which is about a mile. I am fairly strong, as i can just about pick up heavy things or drag them, and take them far distances if i want. Fit or not fit?