The guy is playing basically the entire game EVERY SINGLE NIGHT and on top of that he is being asked to give full effort on both ends of the floor.

Hey Lebron can you put up 30, 8, and 8 and oh by the way can you guard Durant down at the other end?

Cramps can be extremely painful but no one around here would know that because we have a bunch of nonathletic fat guys who gamble on real athletes and bitch about them when they lose their bets.