 Now, blackouts aren't all bad. As producers Florian and Julia explore in this week's Fact File, they're actually quite good for your health. And one more. Looking good. Hey, Florian, is everything all right in here? Yes, Julia. Could you just pass me another nail? Yeah, if I can find one. I can hardly see a thing. Here you go. So I recently found out that it's better to sleep in the dark. Yeah, OK. Everyone knows that.