The Body Clock Podcast
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The Body Clock Podcast episodes

  • [OLD] Day in the Life: Katie Ledecky, Olympic Swimmer

    Owaves Wellness Planner

    Katie Ledecky is a 7X Olympic gold medalist, 19X world champion, and multiple world-record holder for Team USA women’s swimming (Team USA, n.d.). When she was just a freshman in high school, she qualified for the 2012 London Games by achieving an Olympic-trials record in the 800-meter freestyle. In doing so, she became the youngest …

    As featured on www.owaves.com [OLD] Day in the Life: Katie Ledecky, Olympic Swimmer

    2 min
  • New Release: Say Hello to Dark Mode!

    Version 2.9.3 of the Owaves app is here, and it features Dark Mode! We at Team Owaves are so excited to share 2.9.3 with all of you to kick off the year 2021! 



    Many of you have asked for Dark Mode to be added to the app! We’re thrilled to deliver this new feature in 2.9.3, as well as several other features that make the app more user-friendly!



    If you already have the App Store version of Owaves, your app may automatically update to Version 2.9.3! Otherwise, please go to the App Store and “Update” (or download) the Owaves app at owaves.com/appstore! Check out a breakdown of the new features below.   



    Dark Mode



    Enjoy an Owaves app experience that’s easier on the eyes at night, or use Dark Mode in the day as well if you prefer! You now have the option to change Owaves’ background color to black for a sleek look! To do so, simply take the following steps:



    * Visit your “Settings” in iOS14.* Click on “Display & Brightness.”* Change “Appearance” to “Dark.”* That’s it! Go enjoy Owaves in Dark Mode! 



    How to Turn on Dark Mode



    Clock Widget



    Not only do we now have Focus Widgets, which allow you to see your current and next activity from your day plan right on your phone’s home screen, but we also now have Clock Widgets! These Clock Widgets allow you to see your full O or day plan right on your home screen. They make it easy for you to see all of your planned activities for the day with a quick glance at your phone. Convenient, eh? Not to mention, rather fun!  







    Go International 



    International users, we hear you! You now have the option to set the first day of the week in the app to any day you prefer! We understand how important it is to be able to customize the app according to your country’s conventions or your own personal preferences! We hope this helps make using the app a more seamless experience for you. 



    To set your first day of the week to a custom day, follow these steps:



    * Click on the Hamburger menu (a.k.a the button with the three lines) on the top left of your screen.* Select “Settings.”* Click on the “Week Format” option to set your desired first day of the week. * This custom first day of the week will now show up in your weekly and monthly views of your day plans! 



    How to Set the First Day of the Week in the Owaves App



    Personalize Center O Photo 



    Now, you can select your own default photo to appear in the center of all of your day plans! The default photo of waves that the app automatically populates Os with will always be there for you if you need it! However, now you can add your own personal flair to your day plans by adding your own default photo! As a reminder, you can always go into each one of your day plans and individually customize each of their center O photos when you have the time. 



    To select your own default photo, do the following:



    * In the Owaves app, click on the Hamburger menu on the top left of your screen.* Select “Settings” > “Default Photo” > “Change Photo.” * Press “Take photo” or “Choose existing photo,” depending on what you’d like to do!* If you’re taking your own photo, take the photo, click “Use Photo,” position the photo, and click “Done.” If you’re choosing a photo from your camera roll, select your photo, position it,
    0 min
  • Episode 35: Marty Cooper, M.Sc., Inventor of the Cell Phone







    Marty Cooper (Twitter: @MartyMobile) is the inventor of the cell phone, a TIME Magazine Top 100 Inventor in History, a Wireless Hall of Fame inductee, a Charles Stark Draper Prize for Engineering and Marconi Prize winner and chair of the business advisory team at Owaves. We are honored to speak to Marty as he launches his first and only book detailing the invention of the cell phone during his years at Motorola, and to discuss where he sees the future of wireless technology heading. Joining Marty for this discussion are the Founder and CEO of Owaves, Royan Kamyar, M.D., MBA; Senior Director of Community at Owaves, Lauren Serpico, Ph.D., CPT; and Elaine Fang, M.S. candidate at the London School of Economics. ~ With gratitude to Marty for this wonderful interview, from the whole Owaves team!         



    Cutting the Cord: The Cell Phone has Transformed Humanity, Rosetta Books, 2021.



    Show Notes & References:



    00:00-07:25 ~ A Retrospective Introduction



    Reference: The Cell Phone: Marty Cooper’s Big Idea, 60 Minutes, 5.21.10



    07:26-12:15 ~ Glimpse of the Future



    * Marty is Owaves’ Chairman of the Business Advisory team.



    Reference: Owaves team page



    * Life has evolved on earth for almost 4 billion years



    Reference: Early Life on Earth — Animal Origins, Smithsonian Institute



    * The first humans are believed to be over 6 million years old.



    Reference: Introduction to Human Evolution, Smithsonian Institute



    * “I think we have an amazing opportunity to use the data that comes from the cell phones that we carry with us, to understand what it takes to live an appropriate life.”



    * “I think that’s what Owaves is all about. What is the fundamental nature of a human being?… The human body/being is the result of a billion years of evolution. If we don’t take all the inherent aspects of evolution into account as we live, we live a less complete life.”



    * “I’m enchanted by the opportunities for data analytics. Just think about how much we could learn about a person, if we measured virtually everything that is happening to you in life, in a way that doesn’t intrude in your privacy. Wow, is that an important, and difficult problem… But if you could take all that data, and just analyze the data, think about what you’ll learn about what it is appropriate to have a full and complete life that is consistent with evolution!”



    * Wellness tip: Go Hiking!! 



    * Over 35 million older adults fall each year in the United States, according to the CDC.



    * 1 out of 4 older adults will fall each year, making falls a major public health concern.



    Reference: Fall risk statistics from CDC



    * Apple Watch introduced fall detection with the Series 4 in fall of 2018.



    * “It’s interesting,
    1 hr 48 min
  • Introducing Version 2.9.2 of Owaves: It’s Widget Time!

    We at Team Owaves are excited to introduce Version 2.9.2 of the Owaves app, which includes Focus Widgets and several other useful features!  



    We know you have requested widgets and have looked forward to their arrival; enjoy them as our gift to you this holiday season! 



    If you already have the App Store version of Owaves, your app should have automatically updated to Version 2.9.2! Otherwise, please download the Owaves app at owaves.com/appstore to get the new features! Read on for a brief overview of each of the new features in 2.9.2.



    Focus Widget on the Home Screen: Displays Current and Next Activity



    Get a quick overview of what’s on your plate in the present moment and what’s up next, right from your phone’s home screen! You can customize this widget to be whatever size works best for you: Small, Medium, or Large!



    Examples of Focus Widgets on the Home Screen



    To add a Focus Widget to your home screen, do the following:



    * Press down on your home screen’s background. * Once your apps jiggle, tap the Plus (+) button on the top left of your screen. * Tap the “Owaves: Focus” Widget, and swipe from right to left to select your size of choice. * Tap “Add Widget” and press once more on the background of your home screen. Voila! Now your current and next Owaves activity are easily visible on your home screen.



    How to Add an Owaves Focus Widget to Your Home Screen



    Precision Titles: New Titles for Icons and Emojis 



    Make your day planning more targeted and efficient with Version 2.9.2 of Owaves by using the more specific default titles we’ve created for icons and emojis! Enjoy these precision titles we at Team Owaves have worked hard to create for you.



    Examples of Precision Titles in the Owaves App



    Instagram Stories: Share Your O to IG Stories 



    Want to share your O to your Instagram Stories, rather than just your feed? We’ve got you covered! Here are the steps to do so:



    * Press Owaves’ Share Button at the top right of your screen. (Note: It looks like a box with an arrow pointing upward.)* Swipe left where the row of apps is and select the “More” button with the three dots.* Scroll down and click “Stories.”



    And there you have it! Now you can inspire your friends with your day plan by posting it to your Stories!



    How to Share Your O to Instagram Stories



    Notifications: Bug Fixes for Notifications       



    Enjoy a more easy-to-use notification system that’s free of bugs! When you set your default alert time to “None” in the past, all your alert times on every future planned event would set to “None” as well. However, this issue has now been FIXED in 2.9.2, so you can now get the correct notifications you need!



    Want to be notified at the start of your lunch break, 10 minutes before class time, and 1 hour before a work meeting? Prefer no notification before your relaxation time? Set up unique alert times for individual activities by doing the following:



    * Add an activity to your O* Select the “Event Details” button on the bottom left* Press the “Alert” option to set your desired notification for that activity



    0 min
  • Episode 34: Sarah Frier
    Listen on: Apple | Google Play | Spotify | TuneIn
    Sarah Frier is the author of the new book No Filter: The Inside Story of Instagram and is a tech reporter at Bloomberg.
    Transcript
    Dr. Sohaib Imtiaz: Hi guys, welcome to another episode of the Body Clock podcast by Owaves. Today, I’m delighted to have on Sarah Frier, who’s just released a book called No Filter: The Inside Story of Instagram. It’s quite well-read at the moment, it’s everywhere, all over social media. Sarah has a background in technology reporting at Bloomberg so we’re very fortunate to have her on. Nice to have you on, Sarah.
    Sarah Frier: Thank you for having me.
    Dr. Sohaib Imtiaz: No, of course, I’ve been trying to get in touch with you for a while because I’ve been seeing what you post and it’s very interesting, very relevant to Silicon Valley, but not even Silicon Valley, the wider tech sphere and what’s happening right now in the world.
    Sarah Frier: Yeah, I think that more and more of us are spending hours on Instagram and relying on it really as the infrastructure of our lives during this COVID pandemic.
    Dr. Sohaib Imtiaz: Instagram is something which has helped so many people stay connected, but not even that, it’s inspired people to find creativity, which you mentioned repeatedly throughout your book, at a time where we aren’t outside, we’re at home, we are living in a digital world. So before we dive into that, what made you write this book? And I mean, it came out at a perfect time where it engulfed the whole story of a Silicon Valley first billion-dollar acquisition by Facebook and I mean Instagram is an app used by everyone, but especially young people.
    Sarah Frier: For me, the book was about telling a story that hadn’t been told. I have spent my career digging into the intricacies and the drama within Snapchat, within Facebook, within Twitter and I thought that Instagram was a mystery that usually as reporters, once a company is acquired, that’s the art for a startup. The founding story, 18 months, really fast growth, $1 billion acquisition by Facebook and everyone’s happy and that’s the story. But really, the most interesting part of the Instagram story happens after they joined Facebook and after they’re figuring out. They start so small and they’re figuring out who they are within this other giant company with a tremendously strong culture around growth, around metrics. And Instagram has this growth, this culture around art and around…around sharing moments and visuals. And there’s tension from the start. And I thought that that was…that was something I didn’t realize as a reporter until I started digging into it and once I did, I noticed that there was probably a huge opportunity to tell a bigger story.
    Dr. Sohaib Imtiaz: And you definitely did that because being a user myself of these apps, you don’t realize how the features are rolled out and how much goes behind each feature, the competition, looking at other apps and you seem to capture that in such intricate ways with little conversations that are happening between the different stakeholders in Silicon Valley. How did you manage to get those viewpoints or get the understanding of what was going on?
    Sarah Frier: I tried to talk to as many people as possible an...
    34 min
  • Episode 33: Ali Abdaal, MD
    Listen on: Apple | Google Play | Spotify | TuneIn


    Ali Abdaal, MD graduated from the the University of Cambridge, and is also a YouTuber with over 1.2 million subscribers. Ali talks about productivity, tech and entrepreneurship.



    Transcript



    Dr. Sohaib Imtiaz: Hi guys, welcome to another episode of the Body Clock Podcast by Owaves. Very glad to have Ali Abdaal on, who is a big time Youtuber. He’s a junior doctor who graduated from the eminent University of Cambridge, he’s also a podcaster, and he’s very big in the field of medical education as well as productivity, tech, and teaching students on how to learn effectively. So Ali is the best version of a multi-hyphenate, as you can see he’s already hooked up to a mic. I know you’re always prepared. I’ve got all the questions for him in this podcast as he manages to do so many things so seamlessly. He’s got a very large following on social media. So we are going to be discussing mental health, productivity, study tips as well as Ali’s journey and what his vision is in this podcast. So first of all thanks for coming on the podcast Ali. 



    Dr. Ali Abdaal: Thanks for having me man. It’s been good; I feel like we’ve been trying to connect for absolutely ages, but now finally this quarantine lockdown period means I’m sitting at home with nothing to do, so it was perfect when you messaged yesterday. 



    Dr. Sohaib Imtiaz: I can’t believe you have time on your hands for once. But I’m sure you fill it up all the time because you’re someone who seems to be quite planned.



    Dr. Ali Abdaal: Yeah I mean I kind of have this kind of existential dread when I’m not doing anything productive. And it’s kind of bad, I’m trying to get over it but hey. 



    Dr. Sohaib Imtiaz: It’s good to have some downtime. So obviously Owaves is an app which revolves around the concept of time, so it’s very interesting that you are so planned because essentially what we are doing with Owaves in California is we are building a company which targets mental health in students, and you’re very popular with students, with a large following and they seem to hang on to every word you say. You obviously are a very well-read individual.



    Dr. Ali Abdaal: Yes. For some reason, people see me as a source of legitimate advice.



    Dr. Sohaib Imtiaz: Which is good because sometimes I hear you talk and I’m like, wait, I’ve thought of those things and there’s no one there to validate them, especially university. Everything’s so traditional. And was glad there’s someone who’s from such an academic background, you know, went to Cambridge University. And you can, you have that juxtaposition of you’re reading the things that are popular in places like Silicon Valley, which are very nonconformist, disruptive people who normally, traditionally don’t agree with you. You’ve got the two sides of that. And I find that fascinating.



    Dr. Ali Abdaal: Yeah I think, one of the things that I sometimes feel bad about in a way that I feel like a lot of the content I make on the Internet is just information arbitrage on this sort of content that those tech gurus would have read on Twitter two weeks p...
    1 hr 7 min
  • Episode 32: Hina Cheema, MD (@StoryofStyle)
    Listen on: Apple | Google Play | Spotify | TuneIn


    Dr. Hina Cheema is a gynecologist with a large social media following on Instagram. She talks about many topics including mental health and relationships.



    Transcript



    Dr. Sohaib Imtiaz: So hi, guys, welcome to another episode of the Body Clock podcast by Owaves. We’re very fortunate to be joined by a big social media influencer today, Dr. Hina Cheema, who is an obs and gynae physician. She’s also got a very large following on social media. She’s a very creative person, and it seems like a lot of people can connect with her. And her posts resonate with a very wide audience. She posts about many different topics, ranging from social issues to interior design to women’s health. So I’m sure this will be a very good podcast for the listeners. So, nice to meet you, Hina.



    Dr. Hina Cheema: Hi there, Sohaib. How are you?



    Dr. Sohaib Imtiaz: I’m well, I’m thinking, should I be calling you “storyofstyle,” as your Instagram name suggests? So I’d like to ask you, how did your journey start into medicine? So quick version of that, but how did the name storyofstyle come about? And how did you start your social media journey?



    Dr. Hina Cheema: Sure. Yeah. So the thing is, I graduated from med school in Pakistan back in 2005 and got married to my husband, and came to the US. It was a little bit of a struggle trying to get into a residency because you need US clinical experience and you have to complete a set of exams at USMLE. So I got done with those and did a little bit of research and got into OB-GYN. It’s like four years of residency. So I finished the residency in 2010 and it was quite an experience. I was burnt out by the end of my residency and I took a six-month break after that, and I was just staying home with my newborn baby. And it was a wonderful experience. I just never regret taking that break. So after that, I joined a part-time OB-GYN practice and practised for four and a half years. I quit last year and I decided to become a medical humanitarian because it was something that I had been working on for quite some time. So, yeah, it’s just a little back story on storyofstyle. So I started storyofstyle back in 2017, about almost three years ago. And even though it was part-time, you know that in OB-GYN even part-time is like full time.



    And I was pretty burned out. I had two children. I have a daughter who is now 12 and a son who is now five. While I had two kids, my husband had accepted a job in Dallas, and he was flying back and forth from Michigan to Texas. It was quite an experience being a single mom, having to work and shuttle the kids to the school, taking them, bringing them back, and doing all of my mommy duties as well. And I was so burned out that I actually started my blog, The Story of Style. I started it on Instagram. And I don’t know what I was looking for. I think I was just looking for a creative outlet, just something that would take my mind off and I would just have something to look forward to when the kids went to sleep and I had nothing else to do. So I did that, and interestingly, after a month on Instagram,
    44 min
  • Episode 31: Tommy Wood, PhD, Chief Scientific Officer
    Listen on: Apple | Google Play | Spotify | TuneIn
    Dr. Tommy Wood is a Research Assistant Professor at the University of Washington and Chief Scientific Officer of Nourish Balance Thrive, an online-based company using advanced biochemical testing to optimize health in athletes and high performers. Based on their accumulated data, the team is now using machine learning to rapidly and reliably predict both common and complex health problems using, easy and cheap, available data.
    Tommy has a bachelor’s degree in biochemistry from the University of Cambridge, a medical degree from the University of Oxford, and a PhD in physiology and neuroscience from the University of Oslo. He is also a Director of the British Society of Lifestyle Medicine, President of Physicians for Ancestral Health, and on the scientific advisory board of Hintsa Performance.
    Transcript
    Dr. Sohaib Imitiaz: Hi, guys. Welcome to another episode of the Body Clock podcast by Owaves today, I’m delighted to be joined by a fellow, Tommy Wood. So and, Tommy is very accomplished. So he’s a medically trained doctor and he has a PhD in physiology and neuroscience. And he’s being post-doc work in Washington. And he’s also been affiliated with University of Cambridge and University of Oxford through his medical studies on studying biochemistry.
    He’s currently the chief scientific officer of Nourish Bonds Thrive. Tommy is also the president of the Physicians for Ancestral Health. And I hope I haven’t forgotten there, Tommy, because you have done a lot. But I will let you introduce yourself and tell me a little bit about how you’ve been brought in to kind of this emerging field of lifestyle functional medicine.
    Dr. Tommy Wood: Sure. So the one thing that we were talking about- one of the ways that we are kind of connected, was through the British Society of last summits. And so I was one of the founding directors of that. And I’m still one of the directors. I’m the member at large or the Americas representative if you want to call it that. So, yeah. All of that’s absolutely correct. I lived and did most of my training in the U.K.
    I was an undergraduate at Cambridge, then did my medical degree at Oxford. And I did two years of working as a junior doctor in London. So I did my F1 and F2 years as a guest optometrist. And when that was coming to an end, I was offered a PhD by somebody who I had done some undergraduate work a few years before then. And she’d moved to Oslo in Norway.
    So this is something that I think you and I have in common, which is that when somebody gives you a good opportunity and it sounds interesting, you sort of pretty open to just going for it. So that’s what I did. I left the formal medical track in the UK, went to the PhD. And then during my PhD. I met my, now, wife who’s American. And I moved over here to Seattle in the U.S. So the state of Washington rather than the city of Washington. On opposite sides of the country. It’s okay. It’s really common to get those mixed up.
    Dr. Sohaib Imitiaz: The U.K. is a lot smaller, right?
    Dr. Tommy Wood: Yeah. Yeah, absolutely. So then, yeah. I worked here as a post-doc for a short period of time and most of my academic research is in neonatal brain injury or starting to be a sort of pediatric traumatic brain...
    1 hr 18 min
  • Episode 30: Tom Stubbs, PhD, Founder of Chronomics
    Listen on: Apple | Google Play | Spotify | TuneIn
    Tom Stubbs, PhD has a background in cellular biochemistry, molecular biology, and epigenetics. With his extensive background, he created an epigenetics company called Chronomics in December 2017 to help people lead a quality lifestyle based on their results.
    Transcript
    Dr. Sohaib Imtiaz: Hi, guys, welcome to another episode of the Body Clock podcast. Today, I’m delighted to have Dr. Tom Stubbs on our podcast. Hi, Tom. How you doing?
    Dr. Tom Stubbs: Fancy. Thank you. Thank you for having me on the podcast. Pleasure to be here.
    Dr. Sohaib Imtiaz: And I’m glad you could come on. So you’re based in Oxford right now. So I have been following you for about a year and I think you’re doing some very interesting and diverse stuff with genetics in the field of epigenetics, which I’m sure you’ll be explaining to our listeners in this podcast. But I just want to explain Dr. Stubbs’s background, which is quite proficient. So he’s been at the University of Oxford where he studied cellular biochemistry and molecular biology. He then went on to do a PH.D. at the University of Cambridge and is specializing in computational biology, machine learning, epigenetics, and in December 2017, he founded Chronomics, which is an epigenetics company.
    So a very comprehensive background there and a lot of words, which I’m sure a lot of our listeners probably aren’t aware of. But I would describe it as working in the future of health. So, Tom, it would be very nice if you could kind of explain what you’re doing with Chronomics and how you got involved in the epigenetics feel and lifestyle, which will be helping kind of consumers and patients take more control of their health. So if you could do that for our listeners that would be great.
    Dr. Tom Stubbs: Sure. Absolutely. Thank you. Save that introduction. So I guess as a bit of background, we’re all used to thinking about genetics as that information, that DNA that we get from our mother and our father, and that’s fixed from birth, so does not change. And it governs whether we’re going to have things like blue eyes or curly hair or be at risk for certain inherited diseases. We also know that there are people on the planet that share the exact same genetic material, so identical twins. But there are many instances where one twin gets sick, for instance, developing breast cancer when the genetically identical twin does not. Why is this? And the answer is epigenetics, which is the science of how our environment and our lifestyle affect how our DNA is controlled.
    From birth, epigenetic signals influenced by factors such as smoking, sleep and stress are dictating the tracks that all life is heading down. Now, what’s exciting is that unlike this genetic information that’s fixed from birth, our epigenetic information is dynamic. This means that if we find out about factors affecting our health early enough, we can change tracks to live healthier for longer. So, as Sohaib kindly mentioned my background, I conducted PH.D. and postdoctoral research with some of the leaders in the field of epigenetics research, and I, including Professor Wolf Reik and Professor Shankar Balasubramanian. And I built epigenetic predictors of lifestyle factors on aging. During this time,
    1 hr 11 min
  • Episode 29: Josh Turknett, MD, Founder of Brainjo Collective
    Listen on: Apple | Google Play | Spotify | TuneIn
    Josh Turknett, MD is a trained neurologist, author, host of the Unshackled Intelligence Podcast, and the founder of the Brainjo Collective. Not only has he authored books on migraines, he is also the leading light in enhancing human cognition and human potential.
    Transcript
    Dr. Sohaib Imtiaz: Hi, guys. Welcome to another episode of the Body Clock podcast by Owaves. Today, I have a very interesting guest, Josh Turknett, who is an M.D. and a trained neurologist. He’s written a book on migraines, as well as being a leading light in enhancing human cognition and human potential. He is founder of the Brainjo Collective, as well as host of the Unshackled Intelligence Podcast. How you doing, Josh?
    Dr. Dr. Josh Turnkett: Doing great. Thanks for having me.
    Dr. Sohaib Imtiaz: No, I’m glad you could be on because the intelligence and neuroscience is some of the most interesting topics that are expanding today and there’s no one better than you to have on the show to discuss that.
    Dr. Josh Turnkett: No.
    Dr. Sohaib Imtiaz: Before we start, let’s just set a bit of a baseline for the listeners. So you obviously, you’re an M.D. trained in neurology. So you’re trained in how to tackle disease, but you’ve got an interest in prevention of almost cognitive enhancement. So how did you get interested in this field and what was your journey into this?
    Dr. Josh Turnkett: So, yeah, so that’s a fairly long story. I’ll try to hit the highlights. But so as you say, I’m a train neurologist. So I completed medical school back in 2001 and entered into the field of neurology, partly because, you know, this was obviously the brain has been a very active area of research, you know, over the past several decades. So 2001, we just had the decade of the brain. There was a lot of excitement about, you know, what lay ahead in the future. And so part of the reason for this, you know, for wanting to sort of take my interest in the neurosciences into that area was because I figured I would see some pretty transformational treatments during the course of my career.
    And I still remember it. In fact, when I was a senior medical student, I was doing a rotation in behavioral neurology, which is actually my personal area of interest. And I asked one of the prominent researchers there in Alzheimer’s disease, you know, when he thought we might have a cure for Alzheimer’s. And he thought about it for a minute and said, you know, he thought a reasonable estimate was ten years. And, you know, it’s not news to anybody to say that we haven’t gotten there yet. That was almost 20 years ago. And really.
    And Alzheimer’s and almost all of the other major diseases that I see, day in a day, as a neurologist, we don’t have anything that’s really incrementally better than what was available back then in 2001 when I was entering into this field. So, you know, you have that which is a frustrating place to be in. And I think when you consider how much the rest of the world has changed over that period of time, how many technological advancements there have been, you kind of makes you stop and think-it should make you stop and think-you know,
    1 hr 20 min