Ludacris talks with Headkrack about doing his fifth installment of the Fast & Furious.

We have all taken vitamins, and vitamin D has always been a part of the list. For years, we were told that we'd have our needs covered if we drank fortified milk, got a few minutes of daily sun exposure (which delivers the vitamin directly to us through our skin), or took calcium or multivitamin supplements containing additional amounts of vitamin D.