motocross is so much harder and wayy more physically demanding than football i have done both football for 7 years and motocross for 9 years and riding for 13 years and i'm only 16. During my 1st year during A squad i was in the entire game every game and going as hard as i could with difficulty but i was able to do it but after 1 motocross race (I race a yz250f 2011) i'm controlling a somewhere around 200 lbs (i don't know exactly) bike in head to toe gear in blazing heat with more limited vision than football with 20 other riders on the track taking up the same space as you and you're constantly pushing yourself to the limit for 10-15 minutes straight with no breaks (unless you crash) but even then all that energy that you were feeling is like gone all of a sudden your dead beat tired picking up a 200 lbs bike after crashing so you're in pain and getting up and going as fast as you can so u dont fall to far behind to extremely rough so its not exactly a break and you're 5x more tired after you fall than before. after a race i just want to go to my trailer drop the bike fall on the ground and just lay there but with football i can just walk off the field and stay upright and i can still walk around. with football you get like a 10 second break for every 10 seconds oh you go all out for 5 seconds holding back a guy is not that hard at all so no football is not more physically demanding that motocross.