I think of sunlight and failing the availability of the natural light incandescent light as a component of the other pieces of the puzzle that is my own health regimens and practices. When winter comes and there are long periods of overcast days where there is no sunlight a warm pool light on the body for me makes all the difference in the world. I always knew that light had an effect on me growing up, but did not know that a simple brooder fixture with an incandescent pool light would have a positive result in so many ways.
The question of wanting a ribeye on the colder days is an interesting one. Off the top of my head I would guess that there are nutrients that your body might be requiring. Of note would be potassium, niacin, and Riboflavin, which are both used in glucose metabolism.
The hypothetical connection there would be one of sunlight increases glucose metabolism. The caveat here though is that too much heat and light can cause the release of glucagon and summarily cortisol, so be mindful of your bodies signals.
Author
J.R.K