I am noticing a trend with some of the parents I am seeing in my office. A lot of them report that the day starts well with their children, but by the end of the day there is frequent arguing, pushing against limits, and they (the parents) are exhausted and want nothing more than to have their child go to sleep. It would also be fair to note that the children are exhausted by the end of day too, so their tolerance level is running low as well.