This is an article published in the February journal " Scientific American " magazine, titled The exercise paradox (Exercise Paradox). During the report, the researchers concluded through two sets of experiments:
Everyone's daily energy consumption is fixed, and it is impossible to lose weight by exercise alone.
Maybe your eyes will be slightly moist when you see this: "No wonder I get up early every day to run, and I'm so tired that I can't lose weight."
Seeing this conclusion that violates common sense, you will definitely have doubts. Many "fat friends" who have successfully lost weight will have a hundred examples to refute it. Let's first take a look at how scientists came to this conclusion. (If you are not interested in the experiment, you can directly go to the end of the article to see what scientists think is an effective weight loss method.)
First experiment
In the first experiment, scientists followed and investigated a group living in Tanzania, Africa. They are Haza people, and are the last group in the world that hunter and gather for their lives. They are called "The hardest-working people in the world ". Women go out to collect food at dawn, while men go out several miles to hunt with bows and arrows, and can't go home until the evening to continue taking care of children and doing miscellaneous work.
In order to find the relationship between energy and exercise, scientists used the double labeled water method to detect the total energy consumption of Hazards every day, but were surprised to find that although they were doing hard physical work every day, there was no significant difference between the test data of Hazards and ordinary urban residents who enjoyed their current life. After statistical data processing, it was found that men consumed and consumed about 2600 calories of per day, while women consumed about 1900 calories of per day, which is consistent with adults in the United States or Europe.
Second experiment
In 2008, researchers at Loyola University of Chicago compared African-American women in Chicago with rural women in rural women in Nigerian , as well as 98 samples from around the world. It turned out that although urban people enjoy the convenience of modern life and farmers need to engage in heavy physical labor every day, the energy they consume is the same!
In order to study individual differences, they also conducted further experiments, put pedometers on more than 300 testers to test their daily exercise volume, and at the same time, they used the double-standard water method to measure the daily energy consumed, and then compared and concluded.
Among these testers, they included both very active and very active people, as well as lazy people who only perform a small amount of exercise every day or never exercise.
results found that on average, the difference in energy consumption between people sitting on the sofa watching TV every day and people doing moderate exercise is not obvious. People who exercise moderately only consume 200 calories more than lazy people on average, which is probably the calories of a glass of milk .
Summary
These tests have proved that exercise cannot significantly increase the overall energy consumption of the human body. The adaptability of the human body will ensure that the energy consumed by people every day is basically fixed and will not consume a lot of energy due to exercise. The article
points out that the key to weight loss is not exercise. The adaptability of the human body will ensure that the energy consumed by people every day is basically fixed and will not consume a lot of energy due to exercise.
Since the energy we consume every day is fixed, where does the energy we need to exercise come from?
Scientists are unable to answer this question accurately for the time being.
Another possibility is that people who exercise more will spontaneously reduce some invisible energy consumption in their bodies, such as saving energy from the organ and cell levels.
What is the meaning of movement? The article also said: " exercise has a great effect on improving cardiopulmonary function and immune system function. It can also enhance brain function and help people get older healthily ."
Effective weight loss
So the question is, how can you effectively lose weight? The answer given by scientists is: mainly adjusts the diet structure and performs moderate exercise at the same time. Adjust diet to control weight, and exercise to maintain health and vitality.
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