OK, stand straight with your feet shoulder-width apart. Bend your knees, stick your butt out and squat. Great. Now do that again and again, all day long. How many squats would you be able to do? What would happen to your body? And would your butt be enormous by the end of the day? What will happen to your quadriceps, hamstrings, and glutes after this?

00:00 Can you do squats for 24 hours straight?

00:40 How many squats can you do?

03:10 Soreness, potential injuries and how to avoid them.

05:26 Finishing the squat marathon.

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Transcript and sources: What If You Squat for 24 Hours Straight?

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Twenty years later, the Matrix is once again asking us to make an ultimate choice. Would you rather live comfortably in the Matrix or wake up in a terrifying reality? Well, brace yourself. This computer now controls your life down to the last detail. What if your world was a simulation? Could you ever trust your senses? Would you find glitches in the code? And if this is a simulation, who's running the program?

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Dedicated to Sullivan Jones (2012-2022), a bright young What If fan and part of the Underknown family forever. RIP

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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space, and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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Several volcanoes around the world are being woken up on purpose. The mission? To use volcanic eruptions to protect the Earth from global warming. In what ways could you activate a volcano? How could you do this in the safest way possible? And would this save the planet or create more climate chaos? How will they stop climate change? What is solar geoengineering?

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What's the worst pain you've experienced? A broken bone? Touching something hot? Maybe stepping on a sharp toy? In this What If experiment, discover what real pain feels like. What would be the most painful experience you could have? What different types of pain would you feel? And why could this pain be good for you? How does the nervous system respond to pain? Why is trigeminal neuralgia so painful?

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Imagine if all the Earth's oxygen disappeared, just for an hour. Could you hold your breath that long? What would happen to the atmosphere, and could Earth recover from this global suffocation? Explore the effects on your inner ear and the potential disappearance of the ozone layer.

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Hang on because we're about to screech to a halt. The Earth is going to stop spinning for five seconds. How much damage would this sudden stoppage cause? What would you experience in different parts of the world? And when the Earth starts spinning again, would it still be habitable? How would the day and night cycle be affected? Why would there be strong winds?

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The time for talk is over. Now the biggest countries on Earth are fighting for global supremacy. What would happen if the United States started World War III? Who would the U.S. attack first? Could we use robot soldiers? Or would nuclear power win the day? What is adaptive camouflage, and what are other kinds of modern warfare that could be used?

Timeline:
00:00 Starting World War III
00:41 Tensions Between United States, Russia and China
02:05 Could a cyberattack trigger the next World War?
04:35 Pathogens and Bioterrorism

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Transcript and sources: https://whatifshow.com/what-if-the-u-s-started-world-war-iii/

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Elon Musk wants to nuke Mars. What are the consequences? Without nukes, life on Mars might be like this: You'd live in giant glass domes, and grow small portions of food inside.

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"I ain't afraid of no ghost!" Of course not. You're in the Ghostbusters universe. With a quick stomp, demons are as good as gone. So how would life change if you could bust ghosts in real life? Would you need to reinvent nuclear power? Or just a whole lot of money? And could you get slimed?

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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space, and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

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