in the book matthew walker says sleep is underestimated as a prevention for disease. cbs. matthew is with the study of sleep signs at the university of berkeley, california. welcome. sleep is something we don't get enough of. it's true the study found that fewer than 3% of kids get the recommended amount of sleep. so how does this affect their hearts. >> it's frightening, less than 3% getting the recommended necessary 9 hours of sleep a night. what they found is they had larger outcomes, larger waistlines but they were heading on a path to hypertension and high blood pressure and we see that same kind of heart impact in adults i i should note as well. there's a global experiment performed on 1.6 billion people across 70 countries twice a year and it's called daylight saving time. what we see is that in the sprung when we lose one hour of sleep, there's a heart attacks the following day, so i think the message here is that without sleep we become heartbroken in the quite literal medical sense of the definition. >> what do we mean when we say we haven't gotten a good nig

we'll talk with sleep expert matthew walker about why a good night's rest may help prevented heart diseases morning news" for this monday. thanks for watching. i'm anne-marie green. have a great day. -- captions by vitac -- www.vitac.com mcdonald's new fresh beef has left jimmy speechless. so here is charles barkley to speak for him. how'd they make a burger this terrific four words: cooked. when. you. order. that's right. they don't cook it until little jimmy tells 'em to. little jimmy doesn't see cheese that melty on a burger every day. and boy is it juicy. shhhh.... little jimmy, don't talk with your mouth full, it sounds terrible. the new hotter, juicier fresh beef quarter pounder burgers. so good, they'll leave you speechless. i'm michelle griego. >>> live from the bay area studios, this is kpix news. >>> good morning. it is monday, you are taking a live lookout of the beautiful sparkling day, bridge. it is just about 430 in the morning, after a really warm weekend. >> very nice. >> we are all coming off of the pride parade. and the weather was perfect for it i will have to say, it fe

joining me now is matthew walker, professor of neuroscience and psychology at the university of california on the science of sleep and dreams. thank you for coming in. thank you for having me. some of us are upset with sleep, why is it important? we don't really know, do we? —— obsessed. the general public doesn't really know but in science we have had an explosion of understanding. sleep used to be one of the last great divide the mysteries that that's no longer true. we have discovered that every process within the body and every operation of the mind is wonderfully enhanced by sleep, when we get it, but demonstrably impaired when we don't get enough. feedback translated into society. every disease that is killing off in the developed world now has begins. causal links to a lack of sleep? yes, links between sleep loss and cancer. the link has become so strong that recently the world health organisation classified any form of night—time shiftwork as any form of night—time shiftwork as a probable carcinogen. the question eve ryo ne a probable carcinogen. the question everyone asks is how m