Yeah, so taking vitamin D supplements, like your body reacts to the vitamin D differently than if you're to get it from a source like the sun, which is there you're getting it from your skin, whereas supplements, you're taking them in, you're ingesting them, and then like your body's having to take the vitamin D through your gut rather where when you get it from the sun, you take it in from your skin and I heard it's better when you get from the sun.