Don't wait until your brain and body are feeling depressed and fatigued to take extra vitamin D! The further you live from the equator, the more likely you are to feel an energy shift as the days get shorter and your skin gets less exposure to sunlight. Some people crave carbohydrates, feel more tired than usual, and have an overall sensation of sadness or depression. As with anything affecting your health-physical, mental, or otherwise-this seasonal shift is found on a spec