Yeah, I hear what you are saying about swimming as it usually comes up in discussions about "tough" sports. You definitely need great conditioning and you have to train hard but it is mainly just conditioning that you train on. I really don't consider it a "tough" sport. It is great for wrestlers and boxers and mma fighters I agree but again mainly just the conditioning thing because there is really no resistance. There is not even really any impact like in track. There is no throwing or punching or hitting, no contact. Now if there were water goblins on the bottom of the pool grabbing at the swimmers trying to drown them or impeed their movement or hitting them with mallets or something like that then it would be "tough" like wrestling. There is a reason why there are not a lot of injuries in swimming other than maybe like cardiac arrest. Sorry to be a hater. I know it is good for you.