Qualifications : Physical Effort

A sport must require great Physical effort.

This is argument is used to disqualify things like chess, poker and auto racing (NASCAR etc.) I have herd people use this argument against golf as well. The problem with that particular point is that golf requires both precision and physical effort. OK it's not like basketball well the player must maintain a high level of effort for a long time but it's not easy to smack a golf ball 300 yards. Sports car racing is also physically demanding.
This argument is used to disqualify sports like competitive shooting ( pistols or rifles) , archery auto racing (again) or the mental sports (chess, other competitive boardgames). This argument works for somethings but not for others. Many of these things, like shooting require a lot of skill even and physical effort from the competitor.

Embedded in this point is the idea that you must be in good physical shape to excel in this sport. If you can be successful in the sport while grossly obese, then it probably isn't a sport.