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Why does our body vibrate every time we lift weights?
In the exercise, when you exercise, you challenge your body to exceed the normal limits, making your heart and lungs work at full capacity to circulate blood and air thr…
Challenge
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Articles about Challenge
231 published items.
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7 ancient artificial wonders that challenge modern techniques
With modern technology, the construction of massive works has become feasible today, but in history thousands of years ago when technology was not developed, it was cons…
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The scientist struggled to cook at the extreme -70 degrees Celsius
Cooking outdoors becomes a tough challenge in the -70 degree Celsius weather in Antarctica, where everything can freeze in the blink of an eye.
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The law explains why sometimes we say we want to achieve something but give up a few days later
People love challenges, but on the condition that the challenge does not exceed the maximum difficulty they can tolerate.
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Now you can train yourself to become an astronaut through ... smartphone
Not working at NASA does not mean you will never be an astronaut.
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'Challenge the blue whale' - why is it only because of a game that someone is willing to commit suicide?
This movement originated from Russia 3 years ago, and achieved a great spread in the world network community.
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Why do so many people live near volcanoes, challenge death?
Last week, the ground in the residential area of Leilani Estates, Hawaii, cracked, began spraying toxic fumes and lava of Kilauea volcano. At that time, 1,700 resident…
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The rifles 'assassins' of Russian soldiers in urban combat
The enemy lurking behind the brick walls has always been a challenge for infantrymen of any army when fighting in urban areas.
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5 strange phenomena prove that our Earth is extremely mysterious
Nature always contains mysteries, interesting things that challenge the scientific world.
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The 24-minute breath-taking record challenges the scientific world
When Aleix Segura breathed, he often thought of the heart in his chest, according to Wired. On the ground, the concentration of restraining his breathing increased his h…
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In the past, one day on Earth ... only 22 hours
These fluctuations create challenges and many different questions. For a longer period of time, how has the Earth's rotation changed?
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How does weight of shoes affect your speed?
Wearing a pair of heavy shoes obviously will cost you more energy. However, how exactly is your speed affected?
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Those at risk of extinction because of technology
One of the challenges for today's developed economies is the risk of disappearance of many traditional jobs, due to the increase in the use of human robbery technology.
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When did people start dressing?
Determining exactly when people started wearing clothes was a challenge, largely because clothes were originally just things like animal skin, broken very quickly.
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92% of people did not reach the target, so how did the remaining 8% do?
If you really want to achieve many goals in your life then here's how successful people often do with their goals.