I'm most productive working about 25 hours a week, from what I've discovered over the years. Modern jobs aren't the sort of the old days, like hauling coal out

I'm most productive working about 25 hours a week, from what I've discovered over the years. Modern jobs aren't the sort of the old days, like hauling coal out of a mine where working 80 hours produces almost twice as much coal hauled up as a 40-hour workweek. Anecdote and studies show that after a certain time well before 80 hours in a work week, most people's productivity falls drastically, even if they do not perceive this drop themselves. (Many of them perceive their productivity as being unimpaired, much as a drunk driver perceives their driving as being just fine.) Bottom line: A shorter work week may improve many people's productivity. It would mine.