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Health

Facts And Myths About the Human Brain

The brain is the most important and the most complex organ of our organism. It is considered the hard drive of every human being, weighs about a kilogram and a half and contains around 100 billion neurons.

Myths And Facts About The Brain

It is an essential organ, but it also hides realities and myths that have emerged over the years. Which are? What is true about these rumours? Below, we list the best-known myths about the brain.

We Only Use 10% of Our Brain

It is the most widespread expression in the human brain. The reality is that this comment is an urban legend that has been intensified thanks to science fiction movies. You could say that movies like Lucy or Limitless are to blame for this myth.

In other words, we use this body in its entirety and at all times.

Our personality depends on the dominant hemisphere
“If your dominant hemisphere is the right, you are a creative person.” We will have heard this expression on several occasions, but, according to the studies carried out in this regard, this is a myth. Our way of being does not depend on one hemisphere or another.

A person constantly uses both hemispheres, although it is true that each hemisphere is in charge of different tasks.

This myth may have arisen out of research by scientist Roger Sperry on epilepsy. This project helped him win a Nobel Prize.

Listening to Classical Music Makes You Smarter

It is completely false. It all goes back to 1950 when the research was done with students from the University of California (USA) and it was discovered that if subjects listened to 10 minutes of Mozart music before conducting an IQ test, they improved their score.

This was renamed the “Mozart effect”. Years later, the investigation was repeated, and the expected results were not achieved. Even so, we will continue to enjoy classical music concerts just in case.

The senses, a myth that we learn from a young age
One of the myths about the brain goes back to when we went to school. We have always been told that we have the senses of hearing, sight, smell, touch and taste. But the reality is that we have more than five senses.

Scientists list a total of 21 senses. An example would be proprioception, which is the ability to locate our joints at all times.

It is also necessary to clarify that touch receives more senses, such as the perception of pain or heat.

The Brain is Grey

The brain is considered the grey matter, but is it really grey? The reality is different: the brain has a white matter with fibres that connect to the this substance contains neuromelanin.

For everything we learn, our brain creates a new fold
Its surface is covered by folds. Many people believe that they are formed by each new thing that we learn. But it must be said that this is completely false.

These wrinkles form before birth, and this process continues throughout childhood. What is true is that it regenerates over the years, that is, it creates new connections during adulthood.

Health

To Continue Adding Daily Steps is To Add Health

If there is one good thing to note about quarantine, it is that it has made many of us exercise at home. Going through the hallways to add daily steps is one of the easiest and perhaps most important options to stay active. Experts say taking 10,000 steps a day is synonymous with a great dose of health. But if we are confined in a normal flat, how do we manage to add up so many steps? For better and for worse, we are living in a situation where everything is possible and this is also possible.

Your steps to health

We will start at the beginning, put on some good sneakers, the ones at home are not worth it. As they will be on the street, you can clean them before you start walking. Once this is done, go for something, be it music, an audiobook, a podcast or take the opportunity to make some calls to family and friends.

If you are not lucky enough to have a treadmill, plan a different route each day, even if your house is small, you can alternate paths. The important thing is that you do not take it as the most boring moment of the day but as the healthiest.

Moving is vital, Even in Quarantine

But why is it so important to keep walking? An investigation, published in the journal JAMA, analyzed over 4,500 participants aged 40 and over for 3 years, to assess the relationship between the number of daily steps and the risk of death.

After years of study, they found that people who reached 12,000 steps a day had a 65% lower risk than those who did not exceed 4,000. The investigation also determined that the speed or intensity of gait does not matter.

However, the research is observational and medical causality cannot be established at this time. Even with this, what it does show is that walking is essential to be healthy since it activates blood circulation and improves the state of the muscles.

And if you dare, do sports from home too

If the steps are short and you want to do some moderate sports, you can do it with guided exercises. Are you a client of Movistar Fusión? If so, and you have the UHD Decoder at home, go to Movistar + and click on the “Apps” section at the top of the screen.

Within the entire application catalogue, you will see one called App #SeguimosConectados. Once you click, you will find several options, but if you want to play sports, you must go to “Don’t stop taking care of yourself”.

Enjoy exercises for runners with the athlete Chema Martínez and « Yoga at home » with @unavidayogui. Every day the exercises will be updated so that you do not stop training. In addition, they will come in great whether you are already started on the subject or if it is the first time you do it since you will have companion videos to learn the step by step.

Health

Why Do We Like Junk Food So Much?

The theory of a specialist in Evolutionary Psychology relates this type of food to evolution. Thousands of years ago, our ancestors searched for food with a series of components, which are precise what junk food has. Have you ever wondered why you like junk food so much? Flavour is an important factor, of course, but there are others.

Junk Food

David Buss, professor of Psychology at the University of Austin, in Texas, the United States, specialized in Evolutionary Psychology, considers that the main reason for this attraction is evolution.

Thousands of years ago getting food were quite a challenge. So, with the resources they had, this activity was slow and, in many cases, dangerous: they could die trying. So, to survive, they developed an unconscious mechanism to quickly identify which foods were worth investing time and effort in and which were not.

A Learned and Inherited Strategy

According to Buss, these foods had various components, related to basic body functions. Namely: fats, sugar and salt. Sugar, loaded with glucose, is used to produce energy. Fats are another source of energy, which act when the reserves are depleting. And salt regulates sodium needs, which in turn helps control body fluids and nerve impulses.

These three ingredients are present in fast food. According to the professor, this ancestral strategy of food selection still lingers in us, our brain continues to associate foods rich in them as beneficial.

Fast Food Activates the Brain’s Reward Systems

A research conducted by a team of Yale University supports his theory. They conducted a study of 200 people, showing them photographs of familiar foods while taking an MRI of the brain to check their response. They concluded that the neural circuits in the brain’s reward system were activated more when the participants viewed images with foods high in fat and carbohydrates.

Dana Small, the lead author of this study, explains that “the brain overestimates its energy value” and therefore wants it more.

Chemical Enhancers

However, this evolutionary reaction is not the only one to explain why we like junk food so much. We know that the industry that makes this type of food adds certain ingredients to generate more taste and addiction. This is the case of flavour enhancers, which stimulate the taste glands and produce a greater feeling of satisfaction.

The monosodium glutamate, for example, is common compound burgers and pizzas, which inhibits our sense of satiety, causing it takes us longer to fill and continue eating without stopping.

To know more

The consequences of diet on our health are being examined in detail. You can learn more about this in the Netflix documentary What the Health. You can also find out which have been the most decisive in our history in The food that changed the world, on Movistar +.

And, if you are also a Fusion Client and you have the UHD Decoder at home, remember that with the #SeguimosConectados App you can exercise from home to stay in shape with guided exercise videos.