hardest sport

I truly believe wrestling is the hardest sport, i have heard every argument in the book from your match only lasts 6 minutes while soccer or another sport will last for over an hour. i think that wrestling is the hardest sport not only because for that whole 6 minutes you are going 100% the whole time without a break and the hardest part about the sport is to maintain your weight and actually making the weight. wrestling is one of the few sports that requires more preparation then the actual match. what do you feel is the hardest sport?