I've been reading things like this too. I believe it. My mother seems to be on calorie restrictive diets all the time, yet cannot lose weight. She has terrible sleep habits. She goes up to her bedroom early, but has the TV on (with lights off) until she falls asleep and after. She'll wake up at 1-2 am or so and turn off the tube, but then she wakes up really early and can't get back to sleep. So she probably ends up getting 5-6 hours of sleep most nights, not really enough. I am sure the sleep she does get is not great quality because of the noise and the light of the TV. But she won't change her habits and thinks she can't get to sleep without the TV. Urrrrghhhhhhh!