So golf burns more calories than an hour of billiards (216), fishing (302), or even a relaxed canoe trip (345), but we're not sold that energy expenditure alone defines what a sport is. Everyone agrees that cheerleaders have bodies to prove they're burning calories, but good luck getting consensus on whether it's a sport. Curling only burns 345 calories during an hour of competition, but in Canada, it's not just a sport, it's the national pastime. Is Tiger Woods proof that golf is a sport, or is John Daly confirmation to the contrary? That probably depends on whether you've got a set of clubs in the garage.