that wouldn't surprise me, maybe the body uses the sunlight for not yet documented uses other than making D. I was suffering from very low levels of vitamin d e

that wouldn't surprise me, maybe the body uses the sunlight for not yet documented uses other than making D. I was suffering from very low levels of vitamin d evidently but taking it didn't really change anything, and I felt just fine before and after. currently take 2k a day and my blood work stays "normal" range for the past few years. I still don't get much sunlight. I do a 10k walk but do it pretty early or pretty late as I live in Texas and 3/4 of the years it's just too hot and sweaty :)