September through November in the northern United States signals the start of the fall marathon season... not just the holiday season. This is a peak training time for many runners and there's just not enough hours in the day to train, work and live life! As an endurance athlete myself, as well as a sleep specialist, my mind is currently hyper-focused -- more on getting a good night's sleep and less so with running. Sleep is critical to endurance sports training, but it is just as crucial in basic exercise regimens as well. We're always hearing about how exercise and diet can help with overall health, but we don't always factor sleep into that equation.