Here are a couple of reasons this is true.
Does your spouse or family complain that you work too much? This puts strain on you when you’re at work and limits your effectiveness. Cutting out five or more hours a week and spending it with your family will make them happier and that will make you happier too, enabling you to enjoy your work more and get more done. A healthy home life helps ensure a happy work life.
Remember the old saying, “All work and no play makes Johnny a dull boy”? After a certain amount of time at work, your brain goes on auto-pilot and begins to work ineffectively. Taking some more time to relax and recreate will put you at a higher level of performance when you do go to the office. Get some exercise, take up a hobby, but take some more time off. It will help your work become more effective!