Around this time last year, I moved to Northern California and had my first doctor’s appointment for an annual exam. I was surprised to learn that one of the results from my battery of tests was that I was Vitamin D deficient. This was a real shock to me, especially given my lifestyle. I walk 15 minutes to and from work everyday outside. I exercise outside 7 or more hours a week. I assumed I was getting more than my healthy share of Vitamin D. In talking to my doctor that is not in fact the case. For one, when I walk to work I am wearing clothes that cover 80-90% of my body. I often pass under awnings and shade and am in direct sunlight for only a very short period of time. When I work out, I am also pretty covered up and wearing enough sunblock that I might as well be working out at night.