For a couple years I've been blaming it on iron poor blood, lack of vitamins, dieting and a dozen other maladies. Now I found out the real reason. I'm tired because I'm overworked. The population of this country is 237 million. 104 million are retired. That leaves 133 million to do the work. There are 85 million in school, which leave 48 million to do the work. Of this, there are 29 million employed by the federal government. This leaves 19 million to do the work. Four million are in the Armed Forces, which leaves 15 million to do the work.