At night, when there is no infrared radiation hitting your body, the pineal gland secretes melatonin so that it can basically continue to do what it needs to do at very low levels of activity. When you're up active, out doing things, that near infrared radiation shuts down melatonin production in the brain. Now you have this burst of melatonin, especially early in the morning. It's beautiful in the morning because the sun is just coming up. You have more of the reddish hues instead of the blueish hues. And then, as we used to do 100 and 200 years ago, when the sun goes down, we might go to bed. We might make