It is great to see this getting more attention. One of the best routines I started was morning yoga. But it is cold here in Boston, and I have mild seasonal affect disorder. So I got some 250W IR heat lamps and a UV light therapy box to try to simulate sunlight on gloomy days while I do morning yoga. I usually also have some mild eye trouble and dryness in the winter (probably a mix of cycling in the cold, and being indoors). The eye and mood symptoms have pretty much disappeared since using the lights.