sport [spawrt, spohrt]
–noun
an athletic activity requiring skill or physical prowess and often of a competitive nature, as racing, baseball, tennis, golf, bowling, wrestling, boxing, hunting, fishing, etc.
athletic [ath-let-ik]
–adjective
of or pertaining to athletes; involving the use of physical skills or capabilities, as strength, agility, or stamina: athletic sports; athletic training.
Racing is technically a sport, because it requires loads of stamina to hold a car on the track in 100+ temps at 180-200 mph. It says something when they can lose 4 pounds during a race by just sitting there if they don't stay hydrated. I'd say one race yields more stress on the system than the average football player feels in a game, or most other team sports. I remember a construction crew watching me play basketball as a youngen and making a comment about (NASCAR) racing being the only man's sport, and he was right. Any kid can play basketball, baseball, hockey, football, etc.