How to Know if You're Doing a Good Job or Not

This will tell you if you're doing a good job or not and when we've done millions of people will know are those people that do those things are the ones that age backwards or slower. Knowing how long you're in the sun is key to getting enough vitamin d, says Dr. Oz. "I didn't realize like i would need a device to tell me hey dumbass you think you've only been in the sun for ten minutes today to hear dose of vitamin d"