all right. time for "the mix". all right. time for "the mix". we start with the creative advertising that makes you sleepy. i don't need it. >> no. >> i don't need advertising to make me sleepy. >> or to want coffee. >> are you a coffee drinker? >> i do tea. >> everybody needs caffeine. this is in brazil. this is creative advertising. you see it there simple enough. what they do, a advertising company. >> i don't want to watch him yawn. watch him. what they did, they have some cameras -- some cameras nearby. and the more people that walk by, the more the guy yawns. all right? and the point here is to make people sleepy and what they found out that 70% of the people who saw this guy yawn in the advertising yawned themselves. we've all been there. you see somebody yawn, you yawn yourself. then you had people show up