When you're tired, the last thing you may want to do is exercise. But doing just that is really what you need. Exercise will pump oxygen into your blood and brain. Your circulatory system and organs will benefit.
Exercise can help keep adrenal hormones in balance.
Exercise can help normalize blood sugar so your body has a steady supply of energy from which to draw. Fatigue and listlessness can result from drops in blood sugar. Exercise can help emotional stress. A workout provides a healthy outlet for venting frustrations, and as your physical condition improves, self-confidence for a job well done should follow. Exercise releases the body's natural painkillers.