I think most of us work at least partly during the day, and if you're at home. Sit near a window, works like sunscreen to keep keep your skin safe but still all

I think most of us work at least partly during the day, and if you're at home. Sit near a window, works like sunscreen to keep keep your skin safe but still allows UV light below 350 nanometers which is all that's needed to produce vitamin D. http://en.wikipedia.org/wiki/Vitamin_D#Production_in_the_skin http://en.wikipedia.org/wiki/Vitamin_D#Production_in_the_ski... http://answers.google.com/answers/threadview/id/604882.html http://answers.google.com/answers/threadview/id/604882.html