Light is synonymous with warmth. All energy is derived from our sun, so less incoming solar energy stimulates our bodies to compensate for the lack of warmth and light. Even small changes in our light exposure can offset our circadian rhythms, confusing our bodies as to whether we should be asleep or awake at any given moment. Don’t be too alarmed if your regular sleep schedule resets.
If you’re feeling blue, researchers at Harvard Medical School recommend light therapy. On sunny days, even when it’s cold, go outside and simply sit facing the sun, like they do in Scandinavian countries where it’s often bitter cold in the winter. Try this for at least 15 minutes.
You can also brighten your days with candles, therapy lights that simulate natural light, decorating in light colors, and mirrors.