Here's a great resource that I came across via Fitsugar the other day -- The Vitamin Chart. Basically, you'llfind everything you need to know about those pesky lettered vitamins (A, the Bs, C, D, E and K) that we heard so much about but have trouble keeping track of. It helps by clarifying what each vitamin does, how much you need a day and where you can find it in natural sources -- fruits, veggies and nuts.

Which ones are you not getting enough of?