Yes, you can because professional athletes in my opinion push there body to hard. There is such thing as being to fit. Yes, you get nice arms or legs but they also have heath problems later on in life.
So, we know that fitness means being fit or healthy correct. If I jog daily, using my legs then that's a form of physical fitness, but what if I lost my legs. I can't jog anymore, but I can still eat properly to stay in shape, train my upper body, etc. Hence, I would say the answer is False.<span />