I hate people that think racing isn't a sport. Driving a car around a track a 190mph is not easy, physically and mentally. Physically you have to be in good shape to deal with the g-forces that your body is going to encounter. Mentally it's hard because you are concentrating so much on what is going on around you and thinking so much so you can make those split second moves they make. Dale Jr. once described it as being like a hangover when you get out of the car, you are exhausted both physically and mentally. Oh and add to that the fact that sometimes it gets to be like 120 degrees in the car and you have to sit in it doing all that concentrating and thinking and the physical work of driving the car, yeah.....
You need to understand that those cars aren't like regular cars, they aren't as easy to drive as a street car. They are purely functional, not meant for comfort.
So don't anyone ever tell me that nascar isn't an athletic sport. It isn't just "sitting on your ass and driving a car"