La Femme Qui A Passé 17 Mois Seule Dans Une Grotte

Sympa

Imaginez vivre dans l'obscurité totale, profondément sous terre, pendant 17 mois—sans soleil, sans contact humain, juste l'écho de vos pensées. C'est exactement ce qui est arrivé à Beatriz Flamini, une alpiniste espagnole et passionnée de sports extrêmes. Elle s'est portée volontaire pour une expérience scientifique visant à observer comment l'isolement affecte l'esprit et le corps humain, et elle a passé tout ce temps dans une grotte sans contact avec le monde extérieur. Beatriz a occupé son temps en lisant, faisant de l'exercice et écrivant des journaux, mais elle ne savait même pas depuis combien de temps elle était là jusqu'à ce qu'elle en sorte ! Lorsqu'elle est finalement sortie, elle a été surprise de découvrir que le monde avait changé de façons qu'elle n'avait jamais imaginées. Et elle n'était pas la seule à avoir passé des mois dans une grotte pour la science !  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00How long can you survive without looking at your phone or your watch to check the time?

00:07My personal record is 13 minutes, but there is a person who had no trouble living without knowing the time for 63 days.

00:15In the summer of 1962, a Frenchman named Michel Siffre took off his watch and went down to a cave in the French Alps.

00:24At the age of 23 at the time, he spent the next two months in complete isolation, without seeing the sun.

00:31This is how he accidentally became the founder of a scientific field called chronobiology, i.e. the study of biological rhythms.

00:40Michel's initial project was to study an underground glacier that he had just discovered.

00:46He wanted to spend 15 days underground, but he thought it would not be enough to do serious research and decided to stay there for two months, in the dark.

00:55It was really a pleasure, because he always had wet feet and the temperature of his body was much lower than usual.

01:02He spent his free time reading, writing, thinking about his future and studying his environment.

01:08He slept well and ate when he wanted to.

01:11A team was waiting for him at the entrance of the cave. They had agreed.

01:14Our young scientist would communicate with them when he would wake up, when he would eat and when he would go to bed.

01:20The team was not allowed to contact him, but only to record the signals he sent to confirm that he was safe and that he was following the flow of his daily cycle.

01:30Siffre also informed them of his pulse and counted from 1 to 120, because of a figure per second.

01:37This is how he discovered that his perception of time was seriously disrupted.

01:41It took him five minutes to finish this task, instead of the two minutes expected.

01:46When the team told him that it was time to leave the cave, he was convinced that we were only in August, while we were already on September 14.

01:54Siffre believes that the reason was the almost total absence of light.

01:58He only had a small light bulb in the cave, and he felt like he was living a very long day.

02:03In addition, his memory could not remember what he had done the day before or the day before.

02:10The most important result of his experience was this one.

02:13Man, like the animal, has an internal clock that does not depend on the day-night cycle.

02:19Siffre did not stay there and undertook dozens of additional expeditions inside various caves.

02:26Ten years later, he embarked on a six-month experience in Texas.

02:30All this allowed him to see that when people do not have a temporal landmark, they adopt a 48-hour cycle, and not 24 as we are used to.

02:39That is, 36 hours of activity and 12 to 14 hours of sleep.

02:43NASA used the results of his experiments to help astronauts who have short-term memory problems after a period of isolation.

02:54In 2021, a Spanish woman broke the record of the Siffre cave.

02:59Beatrice Flamini spent 500 days in a cave around Granada, practically without contact with the rest of the world.

03:06She insisted that the support team give her no news, even if something happened to her family members.

03:13The idea behind this extreme experience was to test one's own limits,

03:17and to help scientists understand how such rigorous conditions affect the human body and mind.

03:23During this experiment, called Time Cave, Flamini collected food at a designated place and sent GoPro videos of herself to the support team.

03:33The latter could control the images to ensure that she was well physically and mentally.

03:38Flamini spent her time doing weight training, reading books, painting, weaving, and preparing food.

03:45She did not take a shower, but the support team evacuated her natural waste once every five days.

03:50At one point, the flies invaded the cave, but Flamini held on and continued the experiment.

03:56Around the 300th day, she had to leave the cave and stay isolated in a tent for about eight days due to a technical problem.

04:03After 500 days, the support team went to find Flamini.

04:07She was sleeping. She had completely lost track of time.

04:10She told them that she always felt like it was 4 a.m.

04:14She didn't want to leave because she hadn't finished the book she was reading.

04:17Although she began to hear things that were not real, and that she had a strong desire for roasted chicken,

04:23the high-level athlete never considered leaving the Time Cave earlier than expected.

04:28Researchers from several Spanish universities then analyzed the data of this unusual experience.

04:36Complex biological rhythms govern our life, from the smallest cellular processes to the functioning of the entire organism.

04:44These rhythms regulate various aspects of your physiology, including your sleeping habits, your body temperature,

04:51your hormonal balance, your metabolism, and your cardiovascular activity.

04:56Many diseases develop more strongly at night or in the morning.

05:00Work by rolling disturbs the balance between internal rhythms and external time,

05:05and scientists therefore attribute the responsibility of certain diseases to it.

05:09Time lag is a good example of how your internal clock is disrupted when you change time zones.

05:16But light, especially when you catch it at certain times, can help you set your biological clock back to time.

05:22When you see light at the end of the night, your clock moves forward, and the light of the beginning of the evening delays it a bit.

05:29Your body catches up with the time lag at the rhythm of a day for each hour shifted.

05:33And since our natural biological clock is set at around 24.2 hours,

05:37it is easier for us to adapt to the longer days of the West than to the shorter days of the East.

05:42This is why, when athletes or researchers live underground for a certain time,

05:47they always end up feeling like they are experiencing a temporal distortion.

05:55In the 1970s, scientists discovered the mechanism of the circadian clock of drosophiles.

06:01Different genes are at play.

06:03One gene stimulates another, which slows down the first one, thus creating a rhythm of oscillation.

06:09During the day, when the sun shines, a photoreceptor commands certain parts of this loop to relax.

06:15A whole complex network of molecules and neurons ensures that everything goes well.

06:20Each living being has its own circadian clock, with its own set of clocked genes.

06:25In addition to light, other elements such as temperature and food

06:29contribute to synchronizing the clock of an organism with the outside world.

06:35If you feel like an adventurer and you want to isolate yourself in a cave,

06:40what would you say of the deepest pit of our planet?

06:43The Verijofkina Pit.

06:45It was given this title only at the beginning of 2018.

06:48It has been explored step by step in a progressive and cautious way.

06:52The first expedition in this Western Caucasus cave in 1968 allowed only about 5% to explore it,

06:58but it already reached nearly 120 meters.

07:01It was obvious that this cave, whose small entrance plunged into the limestone of the earth's crust,

07:06was much larger.

07:08Explorers from all over the world penetrated it turn by turn, until they reached the bottom.

07:13The second, third and fourth deepest caves in the world are all near each other,

07:20hidden in the mountains of the Arabica Massif.

07:22It is one of the largest karstic massifs on the planet,

07:26but it is still little explored because it is very difficult to access.

07:29The area is only accessible for 4 months a year due to weather conditions.

07:34The descent is very difficult and takes several days.

07:37There are underwater waterfalls with almost frozen water,

07:40floods, obstructed entrances and other unexpected dangers.

07:45If you are not ready to face the deepest of them, you can opt for the longest.

07:51Mammoth Cave, in Kentucky, has more than 643 kilometers of limestone labyrinth,

07:57already explored, and probably about 965 kilometers to discover.

08:03More than half a million people visit this cave each year as part of organized circuits.

08:08You can choose between a classic version and a more extreme version,

08:12discover the cultural history of the cave or attend a concert between these stone walls.

08:17You can also discover more than a hundred animal species that made this place their home.

08:22One of the most famous and unusual of these creatures is the blind tetra.

08:27It has adapted to its environment without light and develops without eyes.

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