If you are occupied in something really worthwhile, would you really care for things like pain? Even an ordinary sportsperson would tell you that when you are pursuing something even as normal as victory in a match, pain ceases to be a big botheration. Unless it becomes crippling; then you have to be carried away on a stretcher.
It’s the noon sun that is beating down upon them—are they bothering? I don’t think they are taking cognizance of it. It is not even reporting because they are where they must be. The sun is where it must be. The body is where it must be. Why are you not where you must be? Why are you wandering here and there? Why are you so homeless?