so you can always put your best face forward. a face in need deserves puffs indeed. "mix" time. chances are if you're watching us right now, you may have sleep-related issues. we sure do working this shift. but there's a new study that says just thinking you got a good night's sleep could help you immeasurably during the day. it's placebo effect. >> power of positive thinking. >> students were told they got a good night's sleep and because of that they did better on tests, memory skills, even though they slept poorly in these studies. so you're not really watching "world news now," you're sleeping. you'll get the four hours before the alarm clock goes off, tell yourself you got eight. >> have an awesome friday. we want to show you picture from these ingenious students