During the winter months its best to stay in good shape. Since it gets dark at 5:30 might as well spend more time in the gym. I love working out because its you against yourself on your own time. Stress and other things happen during the course of a day. A good productive workout is the best way to turn a negative into a positive. Its amazing how much better you feel after a late night workout or an early morning jog...its good for the heart and the mind.