Vitamin D is great for your bones and health in general. You can get it in some foods and possibly supplements, but the sun is one of the best, if not the best source. However, many people are deficient in it as they don't spend much time out in the sun, and the amount they get from food is insufficient. This can lead to fatigue, bone loss, depression, among other conditions.
Do you believe you get enough vitamin D? If not, I would suggest spending some time in the sun frequently.
Do you believe you get enough vitamin D? If not, I would suggest spending some time in the sun frequently.