The soul the competitor drives his or her behavior. I have been reading various blogs and stories about injury and so forth. All I can say is listen deeply to the body. The body will win over the mind and soul, at least in the long run.
Think about when you were a kid and were less invested in sport. When you hurt your knee or whatever, you would simply let the injury go away on its own and most likely would refrain from whatever activity you were doing that caused pain. Eventually, the pain would go away and in some natural manner, you would get back to running or whatever.
Perhaps, simply resting and doing nothing is what is best when the body says no mas.
Alas, the soul and mind of the developed competitor says different and pushes. As we mature and become aware of our abilities, our egos grow, too. Our ego then pushes the body, perhaps too far.
The moral of this diatribe is unless your paycheck depends on winning the race, an injury happens due to over exertion and or over training and perhaps, ample or all out rest is the best way to fully heal.
this comes from someone who works daily with the wounded athlete and the medical world that is paid to keep them going.