00:00If people had feathers, wolverine claws, long beaks, sharp teeth, and other features of animals,
00:06it wouldn't change our lives globally. We would pay more for manicure services, or wouldn't need knives,
00:12using our sharp claws instead. The culture of food consumption would change if we had long beaks.
00:19Feather care would create new branches in the field of fashion and self-care.
00:23All these things help animals survive in the wild, but they would be pointless for us.
00:28But what would change our lives completely would be a drop in our blood temperature.
00:33The circulation of cold fluids in our bodies would change our lifestyle and open up opportunities for physiological changes.
00:41The coolest thing is that the number of bacteria in our organisms would decrease significantly.
00:46Our warm bodies maintain the ideal temperature for both good and bad bacteria.
00:52But if we become cold, most microbes won't survive.
00:56They won't be able to reproduce, and we will go to the doctor less often. But there's a downside.
01:04Those rare microbes that can adapt to low temperatures would cause serious health problems.
01:09The fact is that cold blood can slow down your immune system.
01:14Protective cells will fight less effectively against unwelcome little guests.
01:19Another problem with cold-blooded people, they would depend on external conditions.
01:24We warm-blooded creatures can't live at extreme temperatures either,
01:28but our organisms can react to any changes and regulate the state of the body.
01:33For example, when we're hot, we sweat and thus cool ourselves.
01:37When we feel cold, our muscles tense up.
01:40We start shaking, and the blood circulates faster in the vessels to warm us up.
01:45These features help to adapt to the cold and heat.
01:48But if we were cold-blooded, we'd lose the possibility of this regulation.
01:52We would be too sensitive to any temperature changes.
01:56Imagine all those reptiles living in home terrariums. Their owners buy expensive lamps to heat their homes.
02:02Our houses would look the same.
02:08With cold blood inside, we wouldn't become more resistant to the cold. We would become more dependent on warm conditions.
02:15We would waste a huge amount of energy on additional heaters and gas stoves.
02:20And during cold weather, we would spend all our money on heat.
02:24But our financial situation would remain the same because we would spend less money on food.
02:30Warm-blooded creatures use a lot of energy to maintain the high temperatures of their bodies, and they take this energy from food.
02:37Therefore, cold-blooded people would eat much less, and they would also have a slow metabolism.
02:43A hearty breakfast in the morning would be enough to function normally all day.
02:48However, not everyone can spend a lot of money on electricity.
02:51In cold regions, people would have to keep heaters on almost all year round.
02:56It would be much cheaper to move closer to the equator and not waste money on electricity at all.
03:02Almost all cold-blooded people would strive to live there. The northern parts of the planet would get empty,
03:08but in the southern regions, overpopulation would begin.
03:13A considerable number of people wouldn't be able to live comfortably on such small territories.
03:19The construction of hundreds of thousands of buildings, millions of cars with exhaust gases, factories, and plants on the equator
03:26would significantly worsen the environmental situation.
03:30More population density would lead to disaster.
03:33But fortunately, the coldness of our bodies would help us with this problem.
03:38You know that bears hibernate.
03:40These warm-blooded animals put on a lot of fat and then go to their den to sleep through the winter.
03:45And at this time, their body feeds on the accumulated fat.
03:50However, cold-blooded creatures are also capable of this.
03:53And unlike bears, they don't need to stock up on extra calories as they have much lower energy needs.
04:00Turtles and frogs can burrow into the silt under lakes and ponds and spend up to 6 months there.
04:06The liquid inside their bodies freezes, but the cells remain alive.
04:11This allows them to go through difficult times easily.
04:14So, this ability would ideally help people reduce the load on the planet.
04:19Going to the equator is unnecessary if you can spend 6 months of winter in your bed.
04:24And people living on the equator could take turns doing it.
04:28Have you slept for 6 months? Great, now it's my turn.
04:32Of course, this would significantly change the planet's economy.
04:36Production capacity would drop.
04:38There would be fewer goods and services in the world.
04:41There would be fewer taxis in cities and fewer restaurants.
04:45But it would reduce the harm caused to the environment.
04:48Imagine how easy it would be to wait for the release of some movie or video game.
04:53And what would happen to our dreams?
04:56Flying in the clouds for 6 months or speaking with a group of mutant seagulls on another planet would be cool.
05:03Lucid dreaming training centers would be opening all over the world so that you could have fun during hibernation.
05:10But not all people would agree to such conditions.
05:13Imagine training hard, keeping a strict diet, and then just losing 6 months of your life.
05:19All your progress would disappear, and you'd have to start from the beginning.
05:23Interestingly, there would be fewer athletes in such a world.
05:29Another superpower of cold-blooded people would be the ability to live underwater.
05:34Dolphins, whales, seals, and other mammals live in seas and oceans.
05:39But for some reason, evolution hasn't given them gills.
05:43They can't extract oxygen from the water like fish, so they have to swim to the surface many times per day.
05:49The reason for this is their warm-bloodedness.
05:52Cold-blooded fish don't need a lot of oxygen.
05:55They extract a small part of it from the water with the help of gills, and it's enough for them.
06:00But this wouldn't be enough for warm-blooded creatures.
06:04If dolphins had gills, they would be huge since dolphins need 15 times more oxygen per pound of their mass than cold-blooded fish.
06:13Gills need to constantly move large amounts of water to extract oxygen.
06:17Sharks must always be in motion to get the necessary supply.
06:21If humans had gills, they would be gigantic, and we would have to swim very fast to get enough oxygen.
06:28But everything would be much easier if people were cold-blooded.
06:32Perhaps if we started living in the water, then evolution would give us gills in a couple of thousand years.
06:40We would have a better chance of regenerating with a low body temperature.
06:44Cold-blooded starfish, lizards, and salamanders can grow limbs and organs and even completely restore their entire body systems.
06:52With such a superpower, we would be able to defeat aging, save millions on doctor's visits, and avoid surgeries.
07:00But would we be able to fly if cold blood flowed in our veins?
07:05Unfortunately, we wouldn't be able to grow wings.
07:08A bird is a warm-blooded creature with a fast metabolism.
07:12It needs a lot of oxygen and energy to fly.
07:15If people in some parallel universe could fly, their bones would be much lighter and more fragile, and their muscles would be more developed.
07:24Even with these anatomical changes, they wouldn't be able to fly freely like pigeons or sparrows.
07:30Flying people would be clumsy and barely maneuverable in the air.
07:34They would need to learn how to absorb more oxygen in flight.
07:38Otherwise, they would fly with oxygen tanks.
07:41Or probably evolution would make their lungs much bigger.
07:46Despite many pros, cold blood is still a disadvantage.
07:50Perhaps our brain wouldn't be as developed since it would need less energy.
07:54So it's good that our blood is warm.
07:57We don't have gills, but we cross oceans on ships.
08:00We don't regenerate fast, but we have advanced medicine.
08:04We have a fast metabolism, and there's a lot of delicious food in the supermarket.
08:09We now have the ideal body structure for a comfortable existence in this world.
08:14But how would our life change if our body temperature rose two times?
08:18Well, that's a story for another video.
08:21Hey, watch this space!
08:25That's it for today.
08:26So, hey, if you pacified your curiosity, then give the video a like and share it with your friends.
08:31Or if you want more, just click on these videos and stay on the Bright Side!
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