I support motocross for the obvious reason. Its harder. This isnt to say football players arent in great shape also, but at the age of 14 I was racing Sportsman, Open A, 250A, and winning. These are three of the most difficult classes to race ever. Keep in mind I was 14 and beeting 20-24 year old men who had grown up riding. I could run a sub 6 minute mile, do at least 50 pull ups with easeand bench over 150 pounds. At that age I was in better shape then most football players were at 14. I had what most racers endure, a life changing crash. That bike you sit on for 30 minutes or less before you run out of gas? Yeah it broke 5 of my ribs, myfemur, gave me a severe concussion causing damage that gives me nightmares I still wake up screaming to, and stopped my heart for 38 seconds. How many football players can say that? Not even this but the amount of endurance it takes to race a 20 lap race on a bike that weighs AT LEAST double you takes way more endurence then it takes to play a football game. Anyone who thinks motocross is twisting a throttle and sitting on a bike has clearly never raced before. Mind you all of those things I was phsyically capable of I could do at 14. And I'm a girl. Both sports require physical skill, but motocross takes more. Period the end.