Revitalize Your Brain, Reclaim Your Mental Energy Everyone knows the feeling after a long day—it is difficult to concentrate, make good decisions, or even empathize with others. This daily but completely natural decline in our mental capacity is called “ego depletion,” a state of mind that miraculously but naturally disappears after a good night's sleep. However, more and more people are waking up in a perpetual state of ego depletion: their mental energy source is not recharging—it is actually shrinking. We live in a chronically exhausted society with disastrous consequences for ourselves, society, and future generations. In The Exhausted Brain, Dr. Michael Nehls uncovers the source of our mental energy. He reveals where our "brain battery" is located, what function it serves within our brain, and how we can stop and reverse the decline in its capacity—with profound consequences for our mental wellbeing and social capacity. In short, this book will change the world.