me, whyy students asked do you close your eyes when you play? i said, well, we opened at the five spot. doing his thing and charlie was playing his trumpet. i looked across the bar and there was charlie, [indiscernible] bass player ins new york staring right at me. from then on, i close my eyes. [laughter] tavis: if ride brought a bass pair right now, could you do it with your eyes closed? bring this thing informing. let's thing if we -- let's see if we can work this thing out right quick. first of all, can i just say what an honor it was to have guns program? >> thank you. tavis: anything with his name on it, you want to get it and add it to your collection. i will see you back here next time on pbs. in the meantime, good night from l.a. thanks for watching. keep the faith and enjoy. ♪ ♪ ♪ ♪ ask for more information on today's show, visit tavis smiley on pbs.org. me next time as we take a deep dive in what is grabbing the country's attention in the coming week. is next time. we will see you then. >> and by contributions to your pbs station from

they're not even, scientists aren't even completely sure whyy we yawn.ya yeah.. >> the common thing,end to yawn when you are tired. >> right. yawn --ometimes we >> i'm actually having to yawn. >> but sometimes people yawn when they're not tired. people yawn when they're bored. >> people yawn when other yawn. >> talking about yawning, and in would be fascinated to know, you can write into our face bhook bh page, wfacebookpage, i wonder he yawned while you're listening to this. >> it's not only di contagious g people, but among animals, too. some dogs only have to hear their human counterpart or owner yawn and then they will yawn. >> yeah, yeah. >> many theories as to why we yawn. our producer who who pulled uplld these pictures for us, said as s she was going through thethe pictures to put this together, o she started yawning. there are many theories. one of the most common theories is that your body is saying, heg i need more oxygen, there's a lack of oxygen so that reflex happens, but other studies discount that.th >> there's a current line of rr thought that people yawn to cooo the