Athletics puts one's body in a stressful situation, many athletes learn to ignore the body's signals that they are about to break simply because; if you dont try to break your limits, you will never improve. But, a good coach will often have a conversation with the athlete about safely pushing the limits for improvement.

ultimately, it all boils down to proper warmup(20%), proper training(50%) about the sports, good genes(15%) and luck(15%)